mmc: cavium: Fix a shift wrapping bug

"dat" is a u64 and "shift" starts as 54 so this is a shift wrapping bug.

Fixes 8047c753f3d3 ("mmc: cavium: Add core MMC driver for Cavium SOCs")

Signed-off-by Dan Carpenter <[email protected]>

drivers/mmc/host/cavium.c +1 -1

index d842b6986189..54ff1363b564 100644
@@ -733,7 +733,7 @@ static void do_write_request(struct cvm_mmc_host *host, struct mmc_request *mrq)
                }
 
                while (smi->consumed < smi->length && shift >= 0) {
-                       dat |= ((u8 *)smi->addr)[smi->consumed] << shift;
+                       dat |= (u64)((u8 *)smi->addr)[smi->consumed] << shift;
                        bytes_xfered++;
                        smi->consumed++;
                        shift -= 8;