Add missing check for memory allocation fail.

Signed-off-by: Kirill A. Shutemov <[email protected]>
Cc: Hirokazu Takata <[email protected]>
---
 arch/m32r/include/asm/pgalloc.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/m32r/include/asm/pgalloc.h b/arch/m32r/include/asm/pgalloc.h
index 0fc7361989..ac4208bcc5 100644
--- a/arch/m32r/include/asm/pgalloc.h
+++ b/arch/m32r/include/asm/pgalloc.h
@@ -43,6 +43,8 @@ static __inline__ pgtable_t pte_alloc_one(struct mm_struct 
*mm,
 {
        struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
 
+       if (!pte)
+               return NULL;
        pgtable_page_ctor(pte);
        return pte;
 }
-- 
1.8.4.rc3

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