If mlx5_dev_start() fails, it tries to rollback data structures related to
rte_flow including drop queue. The destruction code doesn't assume the
structures are created but priv_flow_delete_drop_queue() never does sanity
check. This can cause a crash.
Fixes: 028761059aeb ("net/mlx5: use an RSS drop queue")
Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
6839dae96c