sparc64: Fix lmb_reserve() args in find_ramdisk().

This fixes the missing ram regression reported by
Mikael Pettersson <mikpe@it.uu.se>, much thanks for
all of this help in diagnosing this.

The second argument to lmb_reserve() is a size,
not an end address bounds.

Tested-by: Mikael Pettersson <mikpe@it.uu.se>

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index a9828d7..3c7b947 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -768,7 +768,7 @@
 		initrd_start = ramdisk_image;
 		initrd_end = ramdisk_image + sparc_ramdisk_size;
 
-		lmb_reserve(initrd_start, initrd_end);
+		lmb_reserve(initrd_start, sparc_ramdisk_size);
 
 		initrd_start += PAGE_OFFSET;
 		initrd_end += PAGE_OFFSET;