pwm: pca9685: Don't check the return code of pwmchip_remove()

pwmchip_remove() returns always 0. Don't use the value to make it
possible to eventually change the function to return void. Also the
driver core ignores the return value of pca9685_pwm_remove()
and considers the device removed anyhow. So returning early results
in a resource leak.

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

drivers/pwm/pwm-pca9685.c

···
 static int pca9685_pwm_remove(struct i2c_client *client)
 {
 	struct pca9685 *pca = i2c_get_clientdata(client);
-	int ret;
 
-	ret = pwmchip_remove(&pca->chip);
-	if (ret)
-		return ret;
+	pwmchip_remove(&pca->chip);
 
 	if (!pm_runtime_enabled(&client->dev)) {
 		/* Put chip in sleep state if runtime PM is disabled */