media: mt9m111: No need to check for the regulator

The regulator_get() function returns a regulator when it succeeds. There's
no need to check whether the regulator is NULL later on.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/i2c/mt9m111.c

@@ -984,11 +984,9 @@ static int mt9m111_power_on(struct mt9m111 *mt9m111)
 	if (ret < 0)
 		return ret;
 
-	if (mt9m111->regulator) {
-		ret = regulator_enable(mt9m111->regulator);
-		if (ret < 0)
-			return ret;
-	}
+	ret = regulator_enable(mt9m111->regulator);
+	if (ret < 0)
+		return ret;
 
 	ret = mt9m111_resume(mt9m111);
 	if (ret < 0) {
@@ -1002,8 +1000,7 @@ static int mt9m111_power_on(struct mt9m111 *mt9m111)
 static void mt9m111_power_off(struct mt9m111 *mt9m111)
 {
 	mt9m111_suspend(mt9m111);
-	if (mt9m111->regulator)
-		regulator_disable(mt9m111->regulator);
+	regulator_disable(mt9m111->regulator);
 	v4l2_clk_disable(mt9m111->clk);
 }