Bluetooth: mgmt: Use command complete on success for set system config

The command status reply is only for failure. When completing set system
config command, the reply has to be command complete.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

net/bluetooth/mgmt_config.c

@@ -247,9 +247,8 @@ int set_def_system_config(struct sock *sk, struct hci_dev *hdev, void *data,
 		buffer += exp_len;
 	}
 
-	return mgmt_cmd_status(sk, hdev->id,
-			       MGMT_OP_SET_DEF_SYSTEM_CONFIG,
-			       MGMT_STATUS_SUCCESS);
+	return mgmt_cmd_complete(sk, hdev->id,
+				 MGMT_OP_SET_DEF_SYSTEM_CONFIG, 0, NULL, 0);
 }
 
 int read_def_runtime_config(struct sock *sk, struct hci_dev *hdev, void *data,