libmnl defines MNL_CB_OK as 1 and MNL_CB_ERROR as -1. rdma uses these
return codes, and stat_qp_show_parse_cb() should do the same.
Fixes: 16ce4d2366 ("rdma: stat: initialize ret in stat_qp_show_parse_cb()")
Reported-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
Acked-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>