drm/amd/display: Always pass connector_state to stream validation

We need the connector_state for colorspace and scaling information
and can get it from connector->state.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Joshua Ashton <joshua@froggi.es>

Cc: Pekka Paalanen <ppaalanen@gmail.com>
Cc: Sebastian Wick <sebastian.wick@redhat.com>
Cc: Vitaly.Prosyak@amd.com
Cc: Joshua Ashton <joshua@froggi.es>
Cc: Simon Ser <contact@emersion.fr>
Cc: Melissa Wen <mwen@igalia.com>
Cc: dri-devel@lists.freedesktop.org
Cc: amd-gfx@lists.freedesktop.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Harry Wentland

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -5955,15 +5955,14 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
 {
 	struct drm_display_mode *preferred_mode = NULL;
 	struct drm_connector *drm_connector;
-	const struct drm_connector_state *con_state =
-		dm_state ? &dm_state->base : NULL;
+	const struct drm_connector_state *con_state = &dm_state->base;
 	struct dc_stream_state *stream = NULL;
 	struct drm_display_mode mode;
 	struct drm_display_mode saved_mode;
 	struct drm_display_mode *freesync_mode = NULL;
 	bool native_mode_found = false;
 	bool recalculate_timing = false;
-	bool scale = dm_state ? (dm_state->scaling != RMX_OFF) : false;
+	bool scale = dm_state->scaling != RMX_OFF;
 	int mode_refresh;
 	int preferred_refresh = 0;
 	enum color_transfer_func tf = TRANSFER_FUNC_UNKNOWN;
@@ -6605,7 +6604,9 @@ enum drm_mode_status amdgpu_dm_connector_mode_valid(struct drm_connector *connec
 		goto fail;
 	}
 
-	stream = create_validate_stream_for_sink(aconnector, mode, NULL, NULL);
+	stream = create_validate_stream_for_sink(aconnector, mode,
+						 to_dm_connector_state(connector->state),
+						 NULL);
 	if (stream) {
 		dc_stream_release(stream);
 		result = MODE_OK;