ASoC: dapm: Simplify widget clone

New DAPM widgets are created based on a provided template. When cloning
the data, the name and stream name also need to be cloned. Currently the
data and the names are initialized in different places. Simplify the
code by having entire initialization in one place.
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20231026113549.1897368-1-amadeuszx.slawinski@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-dapm.c

@@ -320,7 +320,8 @@ EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
 
 /* create a new dapm widget */
 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
-	const struct snd_soc_dapm_widget *_widget)
+	const struct snd_soc_dapm_widget *_widget,
+	const char *prefix)
 {
 	struct snd_soc_dapm_widget *w;
 
@@ -328,13 +329,19 @@ static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
 	if (!w)
 		return NULL;
 
-	/*
-	 * w->name is duplicated in caller, but w->sname isn't.
-	 * Duplicate it here if defined
-	 */
+	if (prefix)
+		w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, _widget->name);
+	else
+		w->name = kstrdup_const(_widget->name, GFP_KERNEL);
+	if (!w->name) {
+		kfree(w);
+		return NULL;
+	}
+
 	if (_widget->sname) {
 		w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
 		if (!w->sname) {
+			kfree_const(w->name);
 			kfree(w);
 			return NULL;
 		}
@@ -3629,20 +3636,12 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 {
 	enum snd_soc_dapm_direction dir;
 	struct snd_soc_dapm_widget *w;
-	const char *prefix;
 	int ret = -ENOMEM;
 
-	if ((w = dapm_cnew_widget(widget)) == NULL)
+	w = dapm_cnew_widget(widget, soc_dapm_prefix(dapm));
+	if (!w)
 		goto cnew_failed;
 
-	prefix = soc_dapm_prefix(dapm);
-	if (prefix)
-		w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
-	else
-		w->name = kstrdup_const(widget->name, GFP_KERNEL);
-	if (!w->name)
-		goto name_failed;
-
 	switch (w->id) {
 	case snd_soc_dapm_regulator_supply:
 		w->regulator = devm_regulator_get(dapm->dev, widget->name);
@@ -3767,7 +3766,6 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 	dev_err_probe(dapm->dev, ret, "ASoC: Failed to request %s\n",
 		      w->name);
 	kfree_const(w->name);
-name_failed:
 	kfree_const(w->sname);
 	kfree(w);
 cnew_failed: