mmc: atmel: don't test host->data

Found using smatch:
drivers/mmc/host/atmel-mci.c:827 atmci_pdc_complete() warn: variable
dereferenced before check 'host->data' (see line 807)

Stop testing host->data as it is not NULL at that point.
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NChris Ball <chris@printf.net>

drivers/mmc/host/atmel-mci.c

@@ -820,16 +820,9 @@ static void atmci_pdc_complete(struct atmel_mci *host)
 
 	atmci_pdc_cleanup(host);
 
-	/*
-	 * If the card was removed, data will be NULL. No point trying
-	 * to send the stop command or waiting for NBUSY in this case.
-	 */
-	if (host->data) {
-		dev_dbg(&host->pdev->dev,
-		        "(%s) set pending xfer complete\n", __func__);
-		atmci_set_pending(host, EVENT_XFER_COMPLETE);
-		tasklet_schedule(&host->tasklet);
-	}
+	dev_dbg(&host->pdev->dev, "(%s) set pending xfer complete\n", __func__);
+	atmci_set_pending(host, EVENT_XFER_COMPLETE);
+	tasklet_schedule(&host->tasklet);
 }
 
 static void atmci_dma_cleanup(struct atmel_mci *host)