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Error unwinding is done incorrectly in the cited commit.
When steering init fails, there is no need to perform steering cleanup.
When vport error exists, error cleanup should be mirror of the setup
routine, i.e. to perform steering cleanup before metadata cleanup.
This avoids the call trace in accessing uninitialized objects which are
skipped during steering_init() due to failure in steering_init().
Call trace:
mlx5_cmd_modify_header_alloc:805:(pid 21128): too many modify header
actions 1, max supported 0
E-Switch: Failed to create restore mod header
BUG: kernel NULL pointer dereference, address: 00000000000000d0
[ 677.263079] mlx5_destroy_flow_group+0x13/0x80 [mlx5_core]
[ 677.268921] esw_offloads_steering_cleanup+0x51/0xf0 [mlx5_core]
[ 677.275281] esw_offloads_enable+0x1a5/0x800 [mlx5_core]
[ 677.280949] mlx5_eswitch_enable_locked+0x155/0x860 [mlx5_core]
[ 677.287227] mlx5_devlink_eswitch_mode_set+0x1af/0x320
[ 677.293741] devlink_nl_cmd_eswitch_set_doit+0x41/0xb0
[ 677.299217] genl_rcv_msg+0x1eb/0x430
Fixes: 7983a675ba65 ("net/mlx5: E-Switch, Enable chains only if regs loopback is enabled")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>