Ensure we can't come up with an array size that is bigger than the array
by applying the QPN mask before the divide in the free_qpn function.
Reviewed-by: NMichael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>