ums: remove ums_disk_init()

Now that ums_disk_init() is so simple, there's no need for it to be a
separate function. Instead, just add it to the tail end of ums_init().

Cc: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>

board/samsung/common/ums.c

@@ -36,8 +36,14 @@ static struct ums ums_dev = {
 	.name = "UMS disk",
 };
 
-static struct ums *ums_disk_init(struct mmc *mmc)
+struct ums *ums_init(unsigned int dev_num)
 {
+	struct mmc *mmc = NULL;
+
+	mmc = find_mmc_device(dev_num);
+	if (!mmc || mmc_init(mmc))
+		return NULL;
+
 	ums_dev.block_dev = &mmc->block_dev;
 	ums_dev.start_sector = 0;
 	ums_dev.num_sectors = mmc->capacity / SECTOR_SIZE;
@@ -47,12 +53,3 @@ static struct ums *ums_disk_init(struct mmc *mmc)
 
 	return &ums_dev;
 }
-
-struct ums *ums_init(unsigned int dev_num)
-{
-	struct mmc *mmc = find_mmc_device(dev_num);
-
-	if (!mmc || mmc_init(mmc))
-		return NULL;
-	return ums_disk_init(mmc);
-}