autofs4: add missing kfree

It see that the patch tittled "autofs4 - fix pending mount race" is
missing a change that I had recently made.

It's missing a kfree for the case mutex_lock_interruptible() fails
to aquire the wait queue mutex.

Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index cd3b2a67169..1132cc2a031 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -332,8 +332,10 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
         qstr.name = name;
         qstr.hash = full_name_hash(name, qstr.len);
 
-        if (mutex_lock_interruptible(&sbi->wq_mutex))
+        if (mutex_lock_interruptible(&sbi->wq_mutex)) {
+                kfree(qstr.name);
                 return -EINTR;
+        }
 
         ret = validate_request(&wq, sbi, &qstr, dentry, notify);
         if (ret <= 0) {