drm/amd/display: Clear water mark change request bit before programing.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -320,6 +320,9 @@ static void program_watermarks(
 	 */
 	uint32_t prog_wm_value;
 
+	REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
+			DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0);
+
 	/* Repeat for water mark set A, B, C and D. */
 	/* clock state A */
 	prog_wm_value = convert_and_clamp(watermarks->a.urgent_ns,
@@ -518,8 +521,7 @@ static void program_watermarks(
 
 	REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
 			DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 1);
-	REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
-			DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0);
+
 	REG_UPDATE(DCHUBBUB_ARB_SAT_LEVEL,
 			DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz);
 	REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND,