drm/amd/display: clean up mpc programing during fe reset

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@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

@@ -868,17 +868,11 @@ static void reset_front_end_for_pipe(
 	 */
 	tree_cfg = &dc->current_context->res_ctx.mpc_tree[pipe_ctx->mpc_idx];
 
-	if (pipe_ctx->top_pipe == NULL)
-		dcn10_delete_mpc_tree(mpc, tree_cfg);
-	else {
-		if (dcn10_remove_dpp(mpc, tree_cfg, pipe_ctx->pipe_idx))
-			pipe_ctx->top_pipe->bottom_pipe = NULL;
-		else {
+	if (!dcn10_remove_dpp(mpc, tree_cfg, pipe_ctx->pipe_idx)) {
 		dm_logger_write(dc->ctx->logger, LOG_RESOURCE,
 			"%s: failed to find dpp to be removed!\n",
 			__func__);
 	}
-	}
 
 	pipe_ctx->top_pipe = NULL;
 	pipe_ctx->bottom_pipe = NULL;