[PATCH] ASoC: fix simple_return.cocci warnings

[kbuild test robot <fengguang.wu@intel.com>]

sound/soc/codecs/adau1977.c:496:5-8: WARNING: end returns can be simpified

 Simplify a trivial if-return sequence.  Possibly combine with a
 preceding function call.
Generated by: scripts/coccinelle/misc/simple_return.cocci

CC: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
---

 adau1977.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--- a/sound/soc/codecs/adau1977.c
+++ b/sound/soc/codecs/adau1977.c
@@ -493,10 +493,7 @@ static int adau1977_set_bias_level(struc
 		break;
 	}
 
-	if (ret)
-		return ret;
-
-	return 0;
+	return ret;
 }
 
 static int adau1977_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,