Fixes a regression caused by commit a6ce4932

When this lock was converted to a mutex, the locks were turned into
unlocks and vice-versa.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Acked-by: NShirish Pargaonkar <shirishp@us.ibm.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: NSteve French <sfrench@us.ibm.com>