[PATCH 3/3] mm/vmalloc: Print a warning message first on failure

["Uladzislau Rezki (Sony)" <urezki@gmail.com>]

When a memory allocation for array of pages are not succeed
emit a warning message as a first step and then perform the
further cleanup.

The reason it should be done in a right order is the clean
up function which is free_vm_area() can potentially also
follow its error paths what can lead to confusion what was
broken first.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
 mm/vmalloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index a8e50278019a..b2a0cbfa37c1 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2781,11 +2781,11 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
 	}
 
 	if (!area->pages) {
-		free_vm_area(area);
 		warn_alloc(gfp_mask, NULL,
 			   "vmalloc size %lu allocation failure: "
 			   "page array size %lu allocation failed",
 			   nr_small_pages * PAGE_SIZE, array_size);
+		free_vm_area(area);
 		return NULL;
 	}
 
-- 
2.20.1