sdhci: check correct return value

Fix a copy-and-paste error.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 9191aaf..e3a8133 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -448,7 +448,7 @@
 
 	host->adma_addr = dma_map_single(mmc_dev(host->mmc),
 		host->adma_desc, (128 * 2 + 1) * 4, DMA_TO_DEVICE);
-	if (dma_mapping_error(mmc_dev(host->mmc), host->align_addr))
+	if (dma_mapping_error(mmc_dev(host->mmc), host->adma_addr))
 		goto unmap_entries;
 	BUG_ON(host->adma_addr & 0x3);