mmc: msm_sdcc: fix a type mismatch in msmsdccc_config_dma()

msmsdcc_prep_xfer() function returns a signed integer value but
caller function msmsdcc_config_dma() is storing this value in an unsigned
integer variable which is obviously not the correct thing to do.

CRs-Fixed: 476578
Change-Id: I39159e2f4f73c7f54de359cbe4faba5e902915ff
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 3f3687b..8e4bae1 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -958,7 +958,7 @@
 	struct msmsdcc_nc_dmadata *nc;
 	dmov_box *box;
 	uint32_t rows;
-	unsigned int n;
+	int n;
 	int i, err = 0, box_cmd_cnt = 0;
 	struct scatterlist *sg = data->sg;
 	unsigned int len, offset;