ASoC: madera: Correct error path handling in madera_out1_demux_put

Should the write to MADERA_OUTPUT_ENABLES_1 fail and out_clamp[0] not be
set an additional error message will be printed. Clear the ret variable
to avoid this.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200114161841.451-3-ckeepax@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/madera.c

@@ -575,6 +575,7 @@ int madera_out1_demux_put(struct snd_kcontrol *kcontrol,
 	usleep_range(2000, 3000); /* wait for wseq to complete */
 
 	/* change demux setting */
+	ret = 0;
 	if (madera->out_clamp[0])
 		ret = regmap_update_bits(madera->regmap,
 					 MADERA_OUTPUT_ENABLES_1,