drm/i915/edp: postpone MSO init until after EDID read

MSO will require segment pixel overlap information from the
EDID. Postpone MSO init until after we've read and cached the EDID.
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7a360fca01be0f971337b3635f4e4752922ffebe.1630419362.git.jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_dp.c

@@ -2568,8 +2568,6 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp)
 	 */
 	intel_edp_init_source_oui(intel_dp, true);
 
-	intel_edp_mso_init(intel_dp);
-
 	return true;
 }
 
@@ -4848,6 +4846,9 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
 	if (fixed_mode)
 		downclock_mode = intel_drrs_init(intel_connector, fixed_mode);
 
+	/* MSO requires information from the EDID */
+	intel_edp_mso_init(intel_dp);
+
 	/* multiply the mode clock and horizontal timings for MSO */
 	intel_edp_mso_mode_fixup(intel_connector, fixed_mode);
 	intel_edp_mso_mode_fixup(intel_connector, downclock_mode);