drivers/regulator: remove redundant ret variable

Return value from twlreg_write() directly instead
of taking this in another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Link: https://lore.kernel.org/r/20211213021655.435423-1-chi.minghao@zte.com.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Minghao Chi

drivers/regulator/twl-regulator.c

@@ -196,34 +196,28 @@ static int twl4030reg_enable(struct regulator_dev *rdev)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);
 	int			grp;
-	int			ret;
 
 	grp = twlreg_grp(rdev);
 	if (grp < 0)
 		return grp;
 
 	grp |= P1_GRP_4030;
 
-	ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
-
-	return ret;
+	return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 }
 
 static int twl4030reg_disable(struct regulator_dev *rdev)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);
 	int			grp;
-	int			ret;
 
 	grp = twlreg_grp(rdev);
 	if (grp < 0)
 		return grp;
 
 	grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
 
-	ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
-
-	return ret;
+	return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 }
 
 static int twl4030reg_get_status(struct regulator_dev *rdev)