ASoC: tas5086: signedness bug in tas5086_hw_params()

"val" has to be signed for the error handling to work.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/tas5086.c

@@ -251,7 +251,7 @@ static int tas5086_hw_params(struct snd_pcm_substream *substream,
 {
 	struct snd_soc_codec *codec = dai->codec;
 	struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
-	unsigned int val;
+	int val;
 	int ret;
 
 	priv->rate = params_rate(params);