[PATCH] mm: remove redundant var retval in sys_brk

[Yuanhan Liu <yuanhan.liu@linux.intel.com>]

There is only one possible return value of sys_brk, which is mm->brk no
matter succeed or not.

Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
---
 mm/mmap.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index f54b235..ae4093c 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -251,7 +251,7 @@ static unsigned long do_brk(unsigned long addr, unsigned long len);
 
 SYSCALL_DEFINE1(brk, unsigned long, brk)
 {
-	unsigned long rlim, retval;
+	unsigned long rlim;
 	unsigned long newbrk, oldbrk;
 	struct mm_struct *mm = current->mm;
 	unsigned long min_brk;
@@ -307,9 +307,8 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
 set_brk:
 	mm->brk = brk;
 out:
-	retval = mm->brk;
 	up_write(&mm->mmap_sem);
-	return retval;
+	return mm->brk;
 }
 
 static long vma_compute_subtree_gap(struct vm_area_struct *vma)
-- 
1.7.7.6

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