[MMC] au1xmmc: Fix a compilation warning ('status' is not used)

Fix a trivial compilation warning:

  CC      drivers/mmc/au1xmmc.o
drivers/mmc/au1xmmc.c: In function ‘au1xmmc_dma_callback’:
drivers/mmc/au1xmmc.c:743: warning: unused variable ‘status’

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Acked-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/mmc/au1xmmc.c b/drivers/mmc/au1xmmc.c
index 4e1c61a..8d84b04 100644
--- a/drivers/mmc/au1xmmc.c
+++ b/drivers/mmc/au1xmmc.c
@@ -740,7 +740,6 @@
 static void au1xmmc_dma_callback(int irq, void *dev_id, struct pt_regs *regs)
 {
 	struct au1xmmc_host *host = (struct au1xmmc_host *) dev_id;
-	u32 status;
 
 	/* Avoid spurious interrupts */