ASoC: codecs: audio-iio-aux: Simplify audio_iio_aux_add_dapms() with cleanup.h

Allocate the memory with scoped/cleanup.h in audio_iio_aux_add_dapms()
to reduce error handling (less error paths) and make the code a bit
simpler.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20240703-asoc-cleanup-h-v1-1-71219dfd0aef@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/audio-iio-aux.c

@@ -6,6 +6,7 @@
 //
 // Author: Herve Codina <herve.codina@bootlin.com>
 
+#include <linux/cleanup.h>
 #include <linux/iio/consumer.h>
 #include <linux/minmax.h>
 #include <linux/mod_devicetable.h>
@@ -131,33 +132,27 @@ static int audio_iio_aux_add_dapms(struct snd_soc_component *component,
 				   struct audio_iio_aux_chan *chan)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
-	char *output_name;
-	char *input_name;
-	char *pga_name;
 	int ret;
 
-	input_name = kasprintf(GFP_KERNEL, "%s IN", chan->name);
+	/* Allocated names are not needed afterwards (duplicated in ASoC internals) */
+	char *input_name __free(kfree) = kasprintf(GFP_KERNEL, "%s IN", chan->name);
 	if (!input_name)
 		return -ENOMEM;
 
-	output_name = kasprintf(GFP_KERNEL, "%s OUT", chan->name);
-	if (!output_name) {
-		ret = -ENOMEM;
-		goto out_free_input_name;
-	}
+	char *output_name __free(kfree) = kasprintf(GFP_KERNEL, "%s OUT", chan->name);
+	if (!output_name)
+		return -ENOMEM;
 
-	pga_name = kasprintf(GFP_KERNEL, "%s PGA", chan->name);
-	if (!pga_name) {
-		ret = -ENOMEM;
-		goto out_free_output_name;
-	}
+	char *pga_name __free(kfree) = kasprintf(GFP_KERNEL, "%s PGA", chan->name);
+	if (!pga_name)
+		return -ENOMEM;
 
 	widgets[0] = SND_SOC_DAPM_INPUT(input_name);
 	widgets[1] = SND_SOC_DAPM_OUTPUT(output_name);
 	widgets[2] = SND_SOC_DAPM_PGA(pga_name, SND_SOC_NOPM, 0, 0, NULL, 0);
 	ret = snd_soc_dapm_new_controls(dapm, widgets, 3);
 	if (ret)
-		goto out_free_pga_name;
+		return ret;
 
 	routes[0].sink = pga_name;
 	routes[0].control = NULL;
@@ -165,17 +160,8 @@ static int audio_iio_aux_add_dapms(struct snd_soc_component *component,
 	routes[1].sink = output_name;
 	routes[1].control = NULL;
 	routes[1].source = pga_name;
-	ret = snd_soc_dapm_add_routes(dapm, routes, 2);
 
-	/* Allocated names are no more needed (duplicated in ASoC internals) */
-
-out_free_pga_name:
-	kfree(pga_name);
-out_free_output_name:
-	kfree(output_name);
-out_free_input_name:
-	kfree(input_name);
-	return ret;
+	return snd_soc_dapm_add_routes(dapm, routes, 2);
 }
 
 static int audio_iio_aux_component_probe(struct snd_soc_component *component)