revert mm/vmalloc.c: emit the failure message before return

Don't warn twice in __vmalloc_area_node and __vmalloc_node_range if
__vmalloc_area_node allocation failure.  This patch reverts commit
46c001a ("mm/vmalloc.c: emit the failure message before return").

Signed-off-by: Wanpeng Li <[email protected]>
Reviewed-by: Zhang Yanfei <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Cc: Mitsuo Hayasaka <[email protected]>
Cc: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: Wanpeng Li

mm/vmalloc.c

@@ -1635,7 +1635,7 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align,
 
 	addr = __vmalloc_area_node(area, gfp_mask, prot, node);
 	if (!addr)
-		goto fail;
+		return NULL;
 
 	/*
 	 * In this function, newly allocated vm_struct has VM_UNINITIALIZED