[PATCH] ioremap balanced with iounmap for drivers/video/offb

ioremap must be balanced by an iounmap and failing to do so can result in a
memory leak.
Signed-off-by: NAmol Lad <amol@verismonetworks.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/video/offb.c

@@ -402,6 +402,9 @@ static void __init offb_init_fb(const char *name, const char *full_name,
 	fb_alloc_cmap(&info->cmap, 256, 0);
 
 	if (register_framebuffer(info) < 0) {
+		iounmap(par->cmap_adr);
+		par->cmap_adr = NULL;
+		iounmap(info->screen_base);
 		kfree(info);
 		release_mem_region(res_start, res_size);
 		return;