leds: lm3692x: Return 0 from remove callback

The only difference between returning zero or a non-zero value is that
for the non-zero case the i2c will print a generic error message
("remove failed (-ESOMETHING), will be ignored").

In this case however the driver itself already emitted a more helpful
error message, so the additional error message isn't helpful at all.

The long-term goal is to make the i2c remove callback return void, making
all implementations return 0 is preparatory work for this change.

Signed-off-by: Uwe Kleine-König <[e-mail]>
Signed-off-by: Pavel Machek <[e-mail]>

drivers/leds/leds-lm3692x.c

···
 static int lm3692x_remove(struct i2c_client *client)
 {
 	struct lm3692x_led *led = i2c_get_clientdata(client);
-	int ret;
 
-	ret = lm3692x_leds_disable(led);
-	if (ret)
-		return ret;
+	lm3692x_leds_disable(led);
 	mutex_destroy(&led->lock);
 
 	return 0;