ARM: OMAP: mailbox: trivial whitespace fix

Trivial whitespace fix
Signed-off-by: NFelipe Contreras <felipe.contreras@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/plat-omap/mailbox.c

@@ -307,7 +307,7 @@ static void omap_mbox_fini(struct omap_mbox *mbox)
 	if (!--mbox->use_count) {
 		free_irq(mbox->irq, mbox);
 		tasklet_kill(&mbox->txq->tasklet);
-	flush_work_sync(&mbox->rxq->work);
+		flush_work_sync(&mbox->rxq->work);
 		mbox_queue_free(mbox->txq);
 		mbox_queue_free(mbox->rxq);
 	}