Bluetooth: Make mgmt_index_added() and mgmt_index_removed() return void

The return value from mgmt_index_added() and mgmt_index_removed()
functions is never used. So do not pretend that returning an error
would actually be handled and just make both functions return void.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

include/net/bluetooth/hci_core.h

@@ -1092,8 +1092,8 @@ void hci_sock_dev_event(struct hci_dev *hdev, int event);
 #define DISCOV_BREDR_INQUIRY_LEN	0x08
 
 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
-int mgmt_index_added(struct hci_dev *hdev);
-int mgmt_index_removed(struct hci_dev *hdev);
+void mgmt_index_added(struct hci_dev *hdev);
+void mgmt_index_removed(struct hci_dev *hdev);
 int mgmt_set_powered_failed(struct hci_dev *hdev, int err);
 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);

net/bluetooth/mgmt.c

@@ -3782,24 +3782,24 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
 	return err;
 }
 
-int mgmt_index_added(struct hci_dev *hdev)
+void mgmt_index_added(struct hci_dev *hdev)
 {
 	if (hdev->dev_type != HCI_BREDR)
-		return -ENOTSUPP;
+		return;
 
-	return mgmt_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0, NULL);
+	mgmt_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0, NULL);
 }
 
-int mgmt_index_removed(struct hci_dev *hdev)
+void mgmt_index_removed(struct hci_dev *hdev)
 {
 	u8 status = MGMT_STATUS_INVALID_INDEX;
 
 	if (hdev->dev_type != HCI_BREDR)
-		return -ENOTSUPP;
+		return;
 
 	mgmt_pending_foreach(0, hdev, cmd_status_rsp, &status);
 
-	return mgmt_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0, NULL);
+	mgmt_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0, NULL);
 }
 
 static void set_bredr_scan(struct hci_request *req)