drm/dp_mst: Stop releasing VCPI when removing ports from topology

This has never actually worked, and isn't needed anyway: the driver's
always going to try to deallocate VCPI when it tears down the display
that the VCPI belongs to.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@redhat.com>
Cc: Jerry Zuo <Jerry.Zuo@amd.com>
Cc: Juston Li <juston.li@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190111005343.17443-9-lyude@redhat.com

drivers/gpu/drm/drm_dp_mst_topology.c

@@ -1177,8 +1177,6 @@ static void drm_dp_destroy_port(struct kref *kref)
 	struct drm_dp_mst_topology_mgr *mgr = port->mgr;
 
 	if (!port->input) {
-		port->vcpi.num_slots = 0;
-
 		kfree(port->cached_edid);
 
 		/*
@@ -3487,12 +3485,6 @@ static void drm_dp_destroy_connector_work(struct work_struct *work)
 		drm_dp_port_teardown_pdt(port, port->pdt);
 		port->pdt = DP_PEER_DEVICE_NONE;
 
-		if (!port->input && port->vcpi.vcpi > 0) {
-			drm_dp_mst_reset_vcpi_slots(mgr, port);
-			drm_dp_update_payload_part1(mgr);
-			drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
-		}
-
 		drm_dp_mst_put_port_malloc(port);
 		send_hotplug = true;
 	}