drm/amd/display: Reorder detect_edp_sink_caps before link settings read.

read_current_link_settings_on_detect() on eDP 1.4+ may use the
edp_supported_link_rates table which is set up by
detect_edp_sink_caps(), so that function needs to be called first.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Martin Leung <martin.leung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

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

@@ -817,8 +817,8 @@ static bool dc_link_detect_helper(struct dc_link *link,
 		}
 
 		case SIGNAL_TYPE_EDP: {
-			read_current_link_settings_on_detect(link);
 			detect_edp_sink_caps(link);
+			read_current_link_settings_on_detect(link);
 			sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C_OVER_AUX;
 			sink_caps.signal = SIGNAL_TYPE_EDP;
 			break;