pwm: rockchip: Unprepare clocks only after the PWM was unregistered

The driver is supposed to stay functional until pwmchip_remove()
returns. So disable clocks only after that.

pwmchip_remove() always returns 0, so the return code can be ignored
which keeps rockchip_pwm_remove() a bit simpler and allows to eventually
make pwmchip_remove() return void.

Signed-off-by: Uwe Kleine-König <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>

drivers/pwm/pwm-rockchip.c

···
 {
 	struct rockchip_pwm_chip *pc = platform_get_drvdata(pdev);
 
+	pwmchip_remove(&pc->chip);
+
 	clk_unprepare(pc->pclk);
 	clk_unprepare(pc->clk);
 
-	return pwmchip_remove(&pc->chip);
+	return 0;
 }
 
 static struct platform_driver rockchip_pwm_driver = {