Bluetooth: Fix clearing flags on power off before notifying mgmt

When powering off the device the hdev->flags and hdev->dev_flags need to
be cleared before calling mgmt_powered(). If this is not done the
resulting events sent to user space may contain incorrect values.

Note that the HCI_AUTO_OFF flag accessed right after this is part of the
persistent flags, so it's unchanged by the hdev->dev_flags reset.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

net/bluetooth/hci_core.c

@@ -1130,6 +1130,10 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 	 * and no tasks are scheduled. */
 	hdev->close(hdev);
 
+	/* Clear flags */
+	hdev->flags = 0;
+	hdev->dev_flags &= ~HCI_PERSISTENT_MASK;
+
 	if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) &&
 	    mgmt_valid_hdev(hdev)) {
 		hci_dev_lock(hdev);
@@ -1137,10 +1141,6 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 		hci_dev_unlock(hdev);
 	}
 
-	/* Clear flags */
-	hdev->flags = 0;
-	hdev->dev_flags &= ~HCI_PERSISTENT_MASK;
-
 	/* Controller radio is available but is currently powered down */
 	hdev->amp_status = 0;