[PATCH] mmc: atmel-mci: Simplify if(chan) and if(!chan)

[Wan Jiabing]

Use if(!host->dma.chan) instead of if(chan) and if(!chan) to make
code better.

Signed-off-by: Wan Jiabing <wanjiabing at vivo.com>
---
 drivers/mmc/host/atmel-mci.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 807177c953f3..91d52ba7a39f 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -1122,13 +1122,12 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 	}
 
 	/* If we don't have a channel, we can't do DMA */
-	chan = host->dma.chan;
-	if (chan)
-		host->data_chan = chan;
-
-	if (!chan)
+	if (!host->dma.chan)
 		return -ENODEV;
 
+	chan = host->dma.chan;
+	host->data_chan = chan;
+
 	if (data->flags & MMC_DATA_READ) {
 		host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM;
 		maxburst = atmci_convert_chksize(host,
-- 
2.35.3