ALSA: usx2y: Delete an error message for a failed memory allocation in two functions

Omit an extra message for a memory allocation failure in these functions.

This issue was detected by using the Coccinelle software.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdfSigned-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/usx2y/usbusx2yaudio.c

@@ -419,10 +419,8 @@ static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs)
 
 	if (is_playback && NULL == subs->tmpbuf) {	/* allocate a temporary buffer for playback */
 		subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL);
-		if (NULL == subs->tmpbuf) {
-			snd_printk(KERN_ERR "cannot malloc tmpbuf\n");
+		if (!subs->tmpbuf)
 			return -ENOMEM;
-		}
 	}
 	/* allocate and initialize data urbs */
 	for (i = 0; i < NRURBS; i++) {
@@ -949,10 +947,9 @@ static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint,
 	for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
 	     i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
 		usX2Y_substream[i] = kzalloc(sizeof(struct snd_usX2Y_substream), GFP_KERNEL);
-		if (NULL == usX2Y_substream[i]) {
-			snd_printk(KERN_ERR "cannot malloc\n");
+		if (!usX2Y_substream[i])
 			return -ENOMEM;
-		}
+
 		usX2Y_substream[i]->usX2Y = usX2Y(card);
 	}