drm/amd/display: Fix return value from rx irq handler on up request

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1964,11 +1964,11 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd
 	 * so do not handle as a normal sink status change interrupt.
 	 */
 
+	if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.UP_REQ_MSG_RDY)
+		return true;
+
 	/* check if we have MST msg and return since we poll for it */
-	if (hpd_irq_dpcd_data.bytes.device_service_irq.
-			bits.DOWN_REP_MSG_RDY ||
-		hpd_irq_dpcd_data.bytes.device_service_irq.
-			bits.UP_REQ_MSG_RDY)
+	if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.DOWN_REP_MSG_RDY)
 		return false;
 
 	/* For now we only handle 'Downstream port status' case.