ALSA: ppc: 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/ppc/snd_ps3.c

@@ -1024,15 +1024,11 @@ static int snd_ps3_driver_probe(struct ps3_system_bus_device *dev)
 
 	the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED;
 	/* pre-alloc PCM DMA buffer*/
-	ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm,
+	snd_pcm_lib_preallocate_pages_for_all(the_card.pcm,
 					SNDRV_DMA_TYPE_DEV,
 					&dev->core,
 					SND_PS3_PCM_PREALLOC_SIZE,
 					SND_PS3_PCM_PREALLOC_SIZE);
-	if (ret < 0) {
-		pr_info("%s: prealloc failed\n", __func__);
-		goto clean_card;
-	}
 
 	/*
 	 * allocate null buffer