ALSA: usb: Drop superfluous PCM preallocation error checks

snd_pcm_lib_preallocate_pages() and co always succeed, so the error
check is simply redundant.  Drop it.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/usx2y/usbusx2yaudio.c

@@ -981,18 +981,17 @@ static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint,
 
 	sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->pcm_devs);
 
-	if ((playback_endpoint &&
-	     0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
-						     SNDRV_DMA_TYPE_CONTINUOUS,
-						     snd_dma_continuous_data(GFP_KERNEL),
-						     64*1024, 128*1024))) ||
-	    0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
-	    					     SNDRV_DMA_TYPE_CONTINUOUS,
-	    					     snd_dma_continuous_data(GFP_KERNEL),
-						     64*1024, 128*1024))) {
-		snd_usX2Y_pcm_private_free(pcm);
-		return err;
+	if (playback_endpoint) {
+		snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
+					      SNDRV_DMA_TYPE_CONTINUOUS,
+					      snd_dma_continuous_data(GFP_KERNEL),
+					      64*1024, 128*1024);
 	}
+
+	snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
+				      SNDRV_DMA_TYPE_CONTINUOUS,
+				      snd_dma_continuous_data(GFP_KERNEL),
+				      64*1024, 128*1024);
 	usX2Y(card)->pcm_devs++;
 
 	return 0;

sound/usb/usx2y/usx2yhwdeppcm.c

@@ -736,17 +736,14 @@ int usX2Y_hwdep_pcm_new(struct snd_card *card)
 	pcm->info_flags = 0;
 
 	sprintf(pcm->name, NAME_ALLCAPS" hwdep Audio");
-	if (0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
-						     SNDRV_DMA_TYPE_CONTINUOUS,
-						     snd_dma_continuous_data(GFP_KERNEL),
-						     64*1024, 128*1024)) ||
-	    0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
-	    					     SNDRV_DMA_TYPE_CONTINUOUS,
-	    					     snd_dma_continuous_data(GFP_KERNEL),
-						     64*1024, 128*1024))) {
-		return err;
-	}
-
+	snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
+				      SNDRV_DMA_TYPE_CONTINUOUS,
+				      snd_dma_continuous_data(GFP_KERNEL),
+				      64*1024, 128*1024);
+	snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
+				      SNDRV_DMA_TYPE_CONTINUOUS,
+				      snd_dma_continuous_data(GFP_KERNEL),
+				      64*1024, 128*1024);
 
 	return 0;
 }