ASoC: intel: 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>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
index 91a2436..985abda 100644
--- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
@@ -687,20 +687,15 @@ static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_dai *dai = rtd->cpu_dai;
 	struct snd_pcm *pcm = rtd->pcm;
-	int retval = 0;
 
 	if (dai->driver->playback.channels_min ||
 			dai->driver->capture.channels_min) {
-		retval =  snd_pcm_lib_preallocate_pages_for_all(pcm,
+		snd_pcm_lib_preallocate_pages_for_all(pcm,
 			SNDRV_DMA_TYPE_CONTINUOUS,
 			snd_dma_continuous_data(GFP_DMA),
 			SST_MIN_BUFFER, SST_MAX_BUFFER);
-		if (retval) {
-			dev_err(rtd->dev, "dma buffer allocation failure\n");
-			return retval;
-		}
 	}
-	return retval;
+	return 0;
 }
 
 static int sst_soc_probe(struct snd_soc_component *component)