ALSA: firewire-lib: fix error codes for allocation failure

Return -ENOMEM if kcalloc() fails.  Currently the code returns success.

Fixes: f9e5ecdfc2 ("ALSA: firewire-lib: add replay target to cache sequence of packet")
Fixes: 6f24bb8a15 ("ALSA: firewire-lib: pool sequence of packet in IT context independently")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/YLtyL4VoArwVLor1@mwanda
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/amdtp-stream.c

@@ -1625,8 +1625,10 @@ static int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed,
 			s->ctx_data.tx.cache.tail = 0;
 			s->ctx_data.tx.cache.descs = kcalloc(s->ctx_data.tx.cache.size,
 						sizeof(*s->ctx_data.tx.cache.descs), GFP_KERNEL);
-			if (!s->ctx_data.tx.cache.descs)
+			if (!s->ctx_data.tx.cache.descs) {
+				err = -ENOMEM;
 				goto err_context;
+			}
 		}
 	} else {
 		static const struct {
@@ -1643,8 +1645,10 @@ static int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed,
 		};
 
 		s->ctx_data.rx.seq.descs = kcalloc(queue_size, sizeof(*s->ctx_data.rx.seq.descs), GFP_KERNEL);
-		if (!s->ctx_data.rx.seq.descs)
+		if (!s->ctx_data.rx.seq.descs) {
+			err = -ENOMEM;
 			goto err_context;
+		}
 		s->ctx_data.rx.seq.size = queue_size;
 		s->ctx_data.rx.seq.tail = 0;
 		s->ctx_data.rx.seq.head = 0;