regulator: pwm-regulator: Remove unneeded gpiod NULL check

The gpiod API checks for NULL descriptors, so there is no need to
duplicate the check in the driver.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/pwm-regulator.c

@@ -122,7 +122,6 @@ static int pwm_regulator_enable(struct regulator_dev *dev)
 {
 	struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
 
-	if (drvdata->enb_gpio)
 	gpiod_set_value_cansleep(drvdata->enb_gpio, 1);
 
 	return pwm_enable(drvdata->pwm);
@@ -134,7 +133,6 @@ static int pwm_regulator_disable(struct regulator_dev *dev)
 
 	pwm_disable(drvdata->pwm);
 
-	if (drvdata->enb_gpio)
 	gpiod_set_value_cansleep(drvdata->enb_gpio, 0);
 
 	return 0;