Input: elants_i2c - use managed devm_device_add_group

Commit 57b8ff07 ("driver core: add devm_device_add_group() and
friends") has added the managed version for creating sysfs group files.

Use devm_device_add_group instead of sysfs_create_group and remove the
action that cleans the sysfs file when exiting the driver.
Signed-off-by: NAndi Shyti <andi@etezian.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/elants_i2c.c

@@ -1070,13 +1070,6 @@ static const struct attribute_group elants_attribute_group = {
 	.attrs = elants_attributes,
 };
 
-static void elants_i2c_remove_sysfs_group(void *_data)
-{
-	struct elants_data *ts = _data;
-
-	sysfs_remove_group(&ts->client->dev.kobj, &elants_attribute_group);
-}
-
 static int elants_i2c_power_on(struct elants_data *ts)
 {
 	int error;
@@ -1289,23 +1282,13 @@ static int elants_i2c_probe(struct i2c_client *client,
 	if (!client->dev.of_node)
 		device_init_wakeup(&client->dev, true);
 
-	error = sysfs_create_group(&client->dev.kobj, &elants_attribute_group);
+	error = devm_device_add_group(&client->dev, &elants_attribute_group);
 	if (error) {
 		dev_err(&client->dev, "failed to create sysfs attributes: %d\n",
 			error);
 		return error;
 	}
 
-	error = devm_add_action(&client->dev,
-				elants_i2c_remove_sysfs_group, ts);
-	if (error) {
-		elants_i2c_remove_sysfs_group(ts);
-		dev_err(&client->dev,
-			"Failed to add sysfs cleanup action: %d\n",
-			error);
-		return error;
-	}
-
 	return 0;
 }