drm/amd/display: modify init dc_power_state

[why]
initialize the power state for dc use,
but dc_set_power_state it not called at D3.
It would cause can't recognize last power state

[how]
remove initialize the power state for dc use, it is not necessary.

Reviewed-by: Nicholas Kazlauskas <[email protected]>
Signed-off-by: Brandon Syu <[email protected]>
Signed-off-by: Roman Li <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: Brandon Syu

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -5379,13 +5379,9 @@ void dc_set_power_state(struct dc *dc, enum dc_acpi_cm_power_state power_state)
 			dc->vm_pa_config.valid) {
 			dc->hwss.init_sys_ctx(dc->hwseq, dc, &dc->vm_pa_config);
 		}
-		/*mark d0 last*/
-		dc->power_state = power_state;
 		break;
 	default:
 		ASSERT(dc->current_state->stream_count == 0);
-		/*mark d3 first*/
-		dc->power_state = power_state;
 		dc_dmub_srv_notify_fw_dc_power_state(dc->ctx->dmub_srv, power_state);
 
 		dc_state_destruct(dc->current_state);