Devlink trap group is registered but not released in error flow,
add the missing devlink_trap_groups_unregister() call.
Fixes: 0a9003f45e91 ("net: marvell: prestera: devlink: add traps/groups implementation")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
                prestera_trap = &prestera_trap_items_arr[i];
                devlink_traps_unregister(devlink, &prestera_trap->trap, 1);
        }
+       devlink_trap_groups_unregister(devlink, prestera_trap_groups_arr,
+                                      groups_count);
 err_groups_register:
        kfree(trap_data->trap_items_arr);
 err_trap_items_alloc: