metag: handle pgtable_page_ctor() fail

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/metag/include/asm/pgalloc.h b/arch/metag/include/asm/pgalloc.h
index 275d9285141c..3104df0a4822 100644
--- a/arch/metag/include/asm/pgalloc.h
+++ b/arch/metag/include/asm/pgalloc.h
@@ -52,8 +52,12 @@ static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
 {
         struct page *pte;
         pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO, 0);
-        if (pte)
-                pgtable_page_ctor(pte);
+        if (!pte)
+                return NULL;
+        if (!pgtable_page_ctor(pte)) {
+                __free_page(pte);
+                return NULL;
+        }
         return pte;
 }