pwm: rcar: Drop useless call to pwm_get_state()

pwm_get_state has no side effects and the resulting pwm_state is unused.
So drop the call to pwm_get_state() and the local variable from
rcar_pwm_apply().

The call was introduced in commit 7f68ce82 ("pwm: rcar: Add support
"atomic" API") and already then was useless.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-rcar.c

@@ -161,11 +161,9 @@ static int rcar_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 			  const struct pwm_state *state)
 {
 	struct rcar_pwm_chip *rp = to_rcar_pwm_chip(chip);
-	struct pwm_state cur_state;
 	int div, ret;
 
 	/* This HW/driver only supports normal polarity */
-	pwm_get_state(pwm, &cur_state);
 	if (state->polarity != PWM_POLARITY_NORMAL)
 		return -ENOTSUPP;