ALSA: hda - Add missing NULL check in amp hash allocation

Added the missing NULL check from allocator in get_alloc_hash().

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

1 files changed, 2 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 810465bac550..f13834ba6b1d 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -899,6 +899,8 @@ static struct hda_cache_head  *get_alloc_hash(struct hda_cache_rec *cache,
 
         /* add a new hash entry */
         info = snd_array_new(&cache->buf);
+        if (!info)
+                return NULL;
         info->key = key;
         info->val = 0;
         info->next = cache->hash[idx];