ASoC: wm8940: Properly set codec->dapm.bias_level

commit 5927f947

 upstream.
Reported-by: Chris Paulson-Ellis <chris@edesix.com>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

sound/soc/codecs/wm8940.c

@@ -472,6 +472,7 @@ static int wm8940_set_bias_level(struct snd_soc_codec *codec,
 		ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg);
 		break;
 	}
+	codec->bias_level = level;
 
 	return ret;
 }