Bluetooth: Fix length for Read Local OOB Extended Data respone packet

The length of the respone packet for Read Local OOB Extended Data
command has a calculation error. In case LE Secure Connections support
is not enabled, the actual response is shorter. Keep this in mind and
update the value accordingly.
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NJohan Hedberg <johan.hedberg@intel.com>

net/bluetooth/mgmt.c

@@ -6388,7 +6388,7 @@ static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev,
 	hci_dev_unlock(hdev);
 
 	err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
-				MGMT_STATUS_SUCCESS, rp, rp_len);
+				MGMT_STATUS_SUCCESS, rp, sizeof(*rp) + eir_len);
 
 done:
 	kfree(rp);