ALSA: ac97 - Fix missing NULL check in snd_ac97_cvol_new()

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=44721

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index 9473fca9681d..8b0f99688303 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -1271,6 +1271,8 @@ static int snd_ac97_cvol_new(struct snd_card *card, char *name, int reg, unsigne
                 tmp.index = ac97->num;
                 kctl = snd_ctl_new1(&tmp, ac97);
         }
+        if (!kctl)
+                return -ENOMEM;
         if (reg >= AC97_PHONE && reg <= AC97_PCM)
                 set_tlv_db_scale(kctl, db_scale_5bit_12db_max);
         else