staging: mt7621-mmc: Immediately notify mmc layer of card change detection

There is no need to delay notifying the mmc layer.  Schedule the delayed
work to run immediately.
Signed-off-by: George Hilliard <thirtythreeforty@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-mmc/sd.c

@@ -1344,7 +1344,7 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
 	if (intsts & MSDC_INT_CDSC) {
 		if (host->mmc->caps & MMC_CAP_NEEDS_POLL)
 			return IRQ_HANDLED;
-		schedule_delayed_work(&host->card_delaywork, HZ);
+		schedule_delayed_work(&host->card_delaywork, 0);
 		/* tuning when plug card ? */
 	}