drivers/video/igafb.c: introduce lost 'return'

If iga_init() fails, code releases resources and continues to use it.  It
seems that after releasing resources 'return' should be.
Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/igafb.c

@@ -531,6 +531,7 @@ int __init igafb_init(void)
 		iounmap(info->screen_base);
 		kfree(par->mmap_map);
 		kfree(info);
+		return -ENODEV;
         }
 
 #ifdef CONFIG_SPARC