pwm: pwm-bfin: Return proper error if pwmchip_remove() fails

Signed-off-by: Axel Lin <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>

drivers/pwm/pwm-bfin.c

···
 {
 	struct bfin_pwm_chip *pwm = platform_get_drvdata(pdev);
 
-	pwmchip_remove(&pwm->chip);
-
-	return 0;
+	return pwmchip_remove(&pwm->chip);
 }
 
 static struct platform_driver bfin_pwm_driver = {