mei: bus: cancel and disable callback after release call

A driver on the mei bus may rely on the availability
of the receive callback during driver remove() call, e.g. mei_wdt.
Move callbacks dismantling after the remove() call to unblock that scenario.
Signed-off-by: NAlexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/mei/bus.c

@@ -665,6 +665,10 @@ static int mei_cl_device_remove(struct device *dev)
 	if (!cldev || !dev->driver)
 		return 0;
 
+	cldrv = to_mei_cl_driver(dev->driver);
+	if (cldrv->remove)
+		ret = cldrv->remove(cldev);
+
 	if (cldev->rx_cb) {
 		cancel_work_sync(&cldev->rx_work);
 		cldev->rx_cb = NULL;
@@ -674,10 +678,6 @@ static int mei_cl_device_remove(struct device *dev)
 		cldev->notif_cb = NULL;
 	}
 
-	cldrv = to_mei_cl_driver(dev->driver);
-	if (cldrv->remove)
-		ret = cldrv->remove(cldev);
-
 	module_put(THIS_MODULE);
 	dev->driver = NULL;
 	return ret;