autofs: don't fail to free_dev_ioctl(param)

Returning -ENOTTY here fails to free dynamically allocated param.

Link: http://lkml.kernel.org/r/20160812024815.12352.69153.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <ikent@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index c7fcc7438843..d47b35a669e1 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -662,7 +662,8 @@ static int _autofs_dev_ioctl(unsigned int command,
         fn = lookup_dev_ioctl(cmd);
         if (!fn) {
                 pr_warn("unknown command 0x%08x\n", command);
-                return -ENOTTY;
+                err = -ENOTTY;
+                goto out;
         }
 
         fp = NULL;