audio: (cosmetic) simplify multiple return statements

Avoid using "ret" variables where the value can be returned directly.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

src/audio/crossover/crossover.c

@@ -531,7 +531,6 @@ static int crossover_prepare(struct processing_module *mod,
 	struct comp_dev *dev = mod->dev;
 	struct comp_buffer *source, *sink;
 	int channels;
-	int ret = 0;
 
 	comp_info(dev, "crossover_prepare()");
 
@@ -550,11 +549,8 @@ static int crossover_prepare(struct processing_module *mod,
 		if (cd->source_format != audio_stream_get_frm_fmt(&sink->stream)) {
 			comp_err(dev, "crossover_prepare(): Source fmt %d and sink fmt %d are different.",
 				 cd->source_format, audio_stream_get_frm_fmt(&sink->stream));
-			ret = -EINVAL;
+			return -EINVAL;
 		}
-
-		if (ret < 0)
-			return ret;
 	}
 
 	comp_info(dev, "crossover_prepare(), source_format=%d, sink_formats=%d, nch=%d",
@@ -570,7 +566,8 @@ static int crossover_prepare(struct processing_module *mod,
 	}
 
 	if (cd->config) {
-		ret = crossover_setup(mod, channels);
+		int ret = crossover_setup(mod, channels);
+
 		if (ret < 0) {
 			comp_err(dev, "crossover_prepare(), setup failed");
 			return ret;

src/audio/eq_iir/eq_iir_ipc4.c

@@ -105,7 +105,7 @@ static int eq_iir_params(struct processing_module *mod)
 	struct comp_dev *dev = mod->dev;
 	struct comp_buffer *sinkb;
 	enum sof_ipc_frame valid_fmt, frame_fmt;
-	int i, ret;
+	int i;
 
 	comp_dbg(dev, "eq_iir_params()");
 	comp_params = *params;
@@ -125,8 +125,7 @@ static int eq_iir_params(struct processing_module *mod)
 
 	component_set_nearest_period_frames(dev, comp_params.rate);
 	sinkb = comp_dev_get_first_data_consumer(dev);
-	ret = buffer_set_params(sinkb, &comp_params, true);
-	return ret;
+	return buffer_set_params(sinkb, &comp_params, true);
 }
 
 void eq_iir_set_passthrough_func(struct comp_data *cd,

src/audio/module_adapter/module/generic.c

@@ -177,7 +177,6 @@ int module_prepare(struct processing_module *mod,
 		   struct sof_source **sources, int num_of_sources,
 		   struct sof_sink **sinks, int num_of_sinks)
 {
-	int ret = 0;
 	struct module_data *md = &mod->priv;
 	struct comp_dev *dev = mod->dev;
 	const struct module_interface *const ops = dev->drv->adapter_ops;
@@ -191,7 +190,8 @@ int module_prepare(struct processing_module *mod,
 		return -EPERM;
 #endif
 	if (ops->prepare) {
-		ret = ops->prepare(mod, sources, num_of_sources, sinks, num_of_sinks);
+		int ret = ops->prepare(mod, sources, num_of_sources, sinks, num_of_sinks);
+
 		if (ret) {
 			comp_err(dev, "module_prepare() error %d: module specific prepare failed, comp_id %d",
 				 ret, dev_comp_id(dev));
@@ -213,7 +213,7 @@ int module_prepare(struct processing_module *mod,
 #endif
 	comp_dbg(dev, "module_prepare() done");
 
-	return ret;
+	return 0;
 }
 
 int module_process_legacy(struct processing_module *mod,

src/audio/module_adapter/module_adapter_ipc3.c

@@ -321,7 +321,6 @@ int module_adapter_sink_src_prepare(struct comp_dev *dev)
 	struct processing_module *mod = comp_mod(dev);
 	struct comp_buffer *sink_buffer;
 	struct comp_buffer *source_buffer;
-	int ret;
 	int i;
 
 	/* acquire all sink and source buffers, get handlers to sink/source API */
@@ -340,7 +339,6 @@ int module_adapter_sink_src_prepare(struct comp_dev *dev)
 	mod->num_of_sources = i;
 
 	/* Prepare module */
-	ret = module_prepare(mod, mod->sources, mod->num_of_sources, mod->sinks, mod->num_of_sinks);
-
-	return ret;
+	return module_prepare(mod, mod->sources, mod->num_of_sources, mod->sinks,
+			      mod->num_of_sinks);
 }

src/audio/multiband_drc/multiband_drc_ipc4.c

@@ -80,7 +80,7 @@ int multiband_drc_params(struct processing_module *mod)
 	struct comp_dev *dev = mod->dev;
 	struct comp_buffer *sinkb;
 	enum sof_ipc_frame valid_fmt, frame_fmt;
-	int i, ret;
+	int i;
 
 	comp_dbg(dev, "multiband_drc_params()");
 
@@ -101,8 +101,7 @@ int multiband_drc_params(struct processing_module *mod)
 
 	component_set_nearest_period_frames(dev, comp_params.rate);
 	sinkb = comp_dev_get_first_data_consumer(dev);
-	ret = buffer_set_params(sinkb, &comp_params, true);
 
-	return ret;
+	return buffer_set_params(sinkb, &comp_params, true);
 }