ASoC: wm0010: unlock on error path

We're holding the wm0010->lock mutex when we goto err_core.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm0010.c b/sound/soc/codecs/wm0010.c
index a4c3511..0274f04 100644
--- a/sound/soc/codecs/wm0010.c
+++ b/sound/soc/codecs/wm0010.c
@@ -663,7 +663,9 @@
 	wm0010_halt(codec);
 	mutex_unlock(&wm0010->lock);
 	return ret;
+
 err_core:
+	mutex_unlock(&wm0010->lock);
 	regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies),
 			       wm0010->core_supplies);
 err: