tile: use free_bootmem_late() for initrd

commit 3f81d244 upstream.

We were previously using free_bootmem() and just getting lucky
that nothing too bad happened.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

arch/tile/kernel/setup.c

@@ -973,7 +973,7 @@ static void __init load_hv_initrd(void)
 
 void __init free_initrd_mem(unsigned long begin, unsigned long end)
 {
-	free_bootmem(__pa(begin), end - begin);
+	free_bootmem_late(__pa(begin), end - begin);
 }
 
 #else