Bluetooth: bpa10x: change return value

When returning from bpa10x_send_frame, it is necessary to propagate any
potential errno returned from usb_submit_urb.

Signed-off-by: Navid Emamdoost <[e-mail]>
Signed-off-by: Marcel Holtmann <[e-mail]>

drivers/bluetooth/bpa10x.c

···
 
 	usb_free_urb(urb);
 
-	return 0;
+	return err;
 }
 
 static int bpa10x_set_diag(struct hci_dev *hdev, bool enable)