ASoC: mediatek: simplify the return expression of mtk_dai_pcm_prepare()

Simplify the return expression.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Link: https://lore.kernel.org/r/20220505021808.54337-1-chi.minghao@zte.com.cnSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/mediatek/mt8195/mt8195-dai-pcm.c

@@ -213,8 +213,6 @@ static int mtk_dai_pcm_configure(struct snd_pcm_substream *substream,
 static int mtk_dai_pcm_prepare(struct snd_pcm_substream *substream,
 			       struct snd_soc_dai *dai)
 {
-	int ret;
-
 	dev_dbg(dai->dev, "%s(), id %d, stream %d, widget active p %d, c %d\n",
 		__func__, dai->id, substream->stream,
 		dai->playback_widget->active, dai->capture_widget->active);
@@ -222,11 +220,7 @@ static int mtk_dai_pcm_prepare(struct snd_pcm_substream *substream,
 	if (dai->playback_widget->active || dai->capture_widget->active)
 		return 0;
 
-	ret = mtk_dai_pcm_configure(substream, dai);
-	if (ret)
-		return ret;
-
-	return 0;
+	return mtk_dai_pcm_configure(substream, dai);
 }
 
 static int mtk_dai_pcm_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)