[PATCH] mm: pagewalk: fix unused variable warning

[Arnd Bergmann <arnd@xxxxxxxx>]

One of the pagewalk patches introduced a harmless warning:

mm/hmm.c: In function 'hmm_vma_walk_pud':
mm/hmm.c:478:9: error: unused variable 'pmdp' [-Werror=unused-variable]
  pmd_t *pmdp;
         ^~~~
mm/hmm.c:477:30: error: unused variable 'next' [-Werror=unused-variable]
  unsigned long addr = start, next;
                              ^~~~

Remove both of the now-unused variables.

Fixes: cb4d03d5fb4c ("mm: pagewalk: add p4d_entry() and pgd_entry()")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 mm/hmm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/hmm.c b/mm/hmm.c
index a71295e99968..72e5a6d9a417 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -474,8 +474,7 @@ static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
 {
 	struct hmm_vma_walk *hmm_vma_walk = walk->private;
 	struct hmm_range *range = hmm_vma_walk->range;
-	unsigned long addr = start, next;
-	pmd_t *pmdp;
+	unsigned long addr = start;
 	pud_t pud;
 	int ret = 0;
 	spinlock_t *ptl = pud_trans_huge_lock(pudp, walk->vma);
-- 
2.20.0