mm/hmm.c: remove unneeded local variable ret

The local variable ret is always 0. Remove it to make code more tight.

Link: https://lkml.kernel.org/r/20220125124833.39718-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/hmm.c b/mm/hmm.c
index bd56641..af71aac 100644 (file)
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -417,7 +417,6 @@ static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
        struct hmm_range *range = hmm_vma_walk->range;
        unsigned long addr = start;
        pud_t pud;
-       int ret = 0;
        spinlock_t *ptl = pud_trans_huge_lock(pudp, walk->vma);
 
        if (!ptl)
@@ -466,7 +465,7 @@ static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
 
 out_unlock:
        spin_unlock(ptl);
-       return ret;
+       return 0;
 }
 #else
 #define hmm_vma_walk_pud       NULL