mm/mmap.c: do not initialize retval in mmap_pgoff()

When fget() fails we can return -EBADF directly.

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/mmap.c b/mm/mmap.c
index 28d1b35..7e69f30 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1412,13 +1412,13 @@ SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len,
                unsigned long, fd, unsigned long, pgoff)
 {
        struct file *file = NULL;
-       unsigned long retval = -EBADF;
+       unsigned long retval;
 
        if (!(flags & MAP_ANONYMOUS)) {
                audit_mmap_fd(fd, flags);
                file = fget(fd);
                if (!file)
-                       goto out;
+                       return -EBADF;
                if (is_file_hugepages(file))
                        len = ALIGN(len, huge_page_size(hstate_file(file)));
                retval = -EINVAL;
@@ -1453,7 +1453,6 @@ SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len,
 out_fput:
        if (file)
                fput(file);
-out:
        return retval;
 }