regulator: max597x: Remove the unneeded result variable

Return the value from regmap_write() directly instead of storing it
 in another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/20220824074707.221159-1-ye.xingchen@zte.com.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/max597x-regulator.c

@@ -137,7 +137,7 @@ static int max597x_set_ovp(struct regulator_dev *rdev, int lim_uV, int severity,
 static int max597x_set_ocp(struct regulator_dev *rdev, int lim_uA,
 			   int severity, bool enable)
 {
-	int ret, val, reg;
+	int val, reg;
 	unsigned int vthst, vthfst;
 
 	struct max597x_regulator *data = rdev_get_drvdata(rdev);
@@ -183,9 +183,8 @@ static int max597x_set_ocp(struct regulator_dev *rdev, int lim_uA,
 		val = 0xFF;
 
 	reg = MAX5970_REG_DAC_FAST(rdev_id);
-	ret = regmap_write(rdev->regmap, reg, val);
 
-	return ret;
+	return regmap_write(rdev->regmap, reg, val);
 }
 
 static int max597x_get_status(struct regulator_dev *rdev)