Use goto to jump to the fail label to give a failure message before
returning NULL.  This makes the failure handling in this function
consistent.
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 
        addr = __vmalloc_area_node(area, gfp_mask, prot, node, caller);
        if (!addr)
-               return NULL;
+               goto fail;
 
        /*
         * In this function, newly allocated vm_struct has VM_UNLIST flag.