ASoC: dapm: Potential small memory leak in dapm_cnew_widget()

We should free "w" on the error path.

Fixes: 199ed3e8 ("ASoC: dapm: fix use-after-free issue with dailink sname")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-dapm.c

@@ -332,8 +332,10 @@ static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
 	 */
 	if (_widget->sname) {
 		w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
-		if (!w->sname)
+		if (!w->sname) {
+			kfree(w);
 			return NULL;
+		}
 	}
 	return w;
 }