ASoC: tas751x: Factor setting of new bias level into the core

Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/tas571x.c

@@ -208,7 +208,6 @@ static int tas571x_set_bias_level(struct snd_soc_codec *codec,
 		break;
 	}
 
-	codec->dapm.bias_level = level;
 	return 0;
 }