boot: fdt: Drop lmb_alloc*() typecasts

The lmb_alloc_base() returns phys_addr_t , map_sysmem() accepts
phys_addr_t as first parameter. Declare 'addr' as phys_addr_t and
get rid of the casts.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/boot/image-fdt.c b/boot/image-fdt.c
index c2571b2..c37442c 100644
--- a/boot/image-fdt.c
+++ b/boot/image-fdt.c
@@ -162,6 +162,7 @@
 	void	*of_start = NULL;
 	phys_addr_t start, size, usable;
 	char	*fdt_high;
+	phys_addr_t addr;
 	phys_addr_t low;
 	phys_size_t mapsize;
 	ulong	of_len = 0;
@@ -186,7 +187,6 @@
 	fdt_high = env_get("fdt_high");
 	if (fdt_high) {
 		ulong desired_addr = hextoul(fdt_high, NULL);
-		ulong addr;
 
 		if (desired_addr == ~0UL) {
 			/* All ones means use fdt in place */
@@ -224,8 +224,8 @@
 			 * At least part of this DRAM bank is usable, try
 			 * using it for LMB allocation.
 			 */
-			of_start = map_sysmem((ulong)lmb_alloc_base(lmb,
-				    of_len, 0x1000, usable), of_len);
+			addr = lmb_alloc_base(lmb, of_len, 0x1000, usable);
+			of_start = map_sysmem(addr, of_len);
 			/* Allocation succeeded, use this block. */
 			if (of_start != NULL)
 				break;