ASoC: dapm: Check return value of snd_soc_cnew()

snd_soc_cnew() can return NULL, so we should check the result before trying to
use it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index d74c3560d556..b4fae8717851 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -671,8 +671,10 @@ static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
 
                 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
                                         prefix);
-                kcontrol->private_free = dapm_kcontrol_free;
                 kfree(long_name);
+                if (!kcontrol)
+                        return -ENOMEM;
+                kcontrol->private_free = dapm_kcontrol_free;
 
                 ret = dapm_kcontrol_data_alloc(w, kcontrol);
                 if (ret) {