ASoC: rt5640: Remove the unnecessary parentheses

The patch removes the unnecessary parentheses.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 4c86613..b6a02c1 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -2110,7 +2110,7 @@
 	}
 
 	regmap_read(rt5640->regmap, RT5640_VENDOR_ID2, &val);
-	if ((val != RT5640_DEVICE_ID)) {
+	if (val != RT5640_DEVICE_ID) {
 		dev_err(&i2c->dev,
 			"Device with ID register %x is not rt5640/39\n", val);
 		return -ENODEV;