ionic: use timer_shutdown_sync

When stopping the watchdog timer at remove time we should
be using the new timer_shutdown_sync to assure the timer
doesn't ever get rearmed.
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c

@@ -396,7 +396,7 @@ static void ionic_remove(struct pci_dev *pdev)
 {
 	struct ionic *ionic = pci_get_drvdata(pdev);
 
-	del_timer_sync(&ionic->watchdog_timer);
+	timer_shutdown_sync(&ionic->watchdog_timer);
 
 	if (ionic->lif) {
 		/* prevent adminq cmds if already known as down */