ASoC: pcm186x: simplify the return expression of pcm186x_power_off()

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/20220505022102.54650-1-chi.minghao@zte.com.cnSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/pcm186x.c

@@ -534,19 +534,14 @@ static int pcm186x_power_on(struct snd_soc_component *component)
 static int pcm186x_power_off(struct snd_soc_component *component)
 {
 	struct pcm186x_priv *priv = snd_soc_component_get_drvdata(component);
-	int ret;
 
 	snd_soc_component_update_bits(component, PCM186X_POWER_CTRL,
 			    PCM186X_PWR_CTRL_PWRDN, PCM186X_PWR_CTRL_PWRDN);
 
 	regcache_cache_only(priv->regmap, true);
 
-	ret = regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
+	return regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
 				     priv->supplies);
-	if (ret)
-		return ret;
-
-	return 0;
 }
 
 static int pcm186x_set_bias_level(struct snd_soc_component *component,