mmc: core: fix indentation

This patch fixes incorrect indentation.  (Just code cleanup)
Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/core/core.c

@@ -516,8 +516,7 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host,
 		mmc_pre_req(host, areq->mrq, !host->areq);
 
 	if (host->areq) {
-			err = mmc_wait_for_data_req_done(host, host->areq->mrq,
-					areq);
+		err = mmc_wait_for_data_req_done(host, host->areq->mrq,	areq);
 		if (err == MMC_BLK_NEW_REQUEST) {
 			if (error)
 				*error = err;