drm/amd/display: Change ASSR disable sequence

commit 2d696cc upstream.

[Why]
Currently disabling ASSR before stream is disabled causes visible
display corruption.

[How]
Move disable ASSR command to after stream has been disabled.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Swapnil Patel <swapnil.patel@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Swapnil Patel

drivers/gpu/drm/amd/display/dc/link/link_dpms.c

@@ -2313,8 +2313,6 @@ void link_set_dpms_off(struct pipe_ctx *pipe_ctx)
 
 	dc->hwss.disable_audio_stream(pipe_ctx);
 
-	edp_set_panel_assr(link, pipe_ctx, &panel_mode_dp, false);
-
 	update_psp_stream_config(pipe_ctx, true);
 	dc->hwss.blank_stream(pipe_ctx);
 
@@ -2368,6 +2366,7 @@ void link_set_dpms_off(struct pipe_ctx *pipe_ctx)
 		dc->hwss.disable_stream(pipe_ctx);
 		disable_link(pipe_ctx->stream->link, &pipe_ctx->link_res, pipe_ctx->stream->signal);
 	}
+	edp_set_panel_assr(link, pipe_ctx, &panel_mode_dp, false);
 
 	if (pipe_ctx->stream->timing.flags.DSC) {
 		if (dc_is_dp_signal(pipe_ctx->stream->signal))