ALSA: sh: 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/sh/aica.c

@@ -464,14 +464,12 @@ static int __init snd_aicapcmchip(struct snd_card_aica
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 			&snd_aicapcm_playback_ops);
 	/* Allocate the DMA buffers */
-	err =
 	snd_pcm_lib_preallocate_pages_for_all(pcm,
 					      SNDRV_DMA_TYPE_CONTINUOUS,
-						  snd_dma_continuous_data
-						  (GFP_KERNEL),
+					      snd_dma_continuous_data(GFP_KERNEL),
 					      AICA_BUFFER_SIZE,
 					      AICA_BUFFER_SIZE);
-	return err;
+	return 0;
 }
 
 /* Mixer controls */