drm/amd/display: Check hubp in pipe_ctx not in res_pool.

When disable plane, check power gate flag in hubp with pipe_ctx,
not with res_pool.
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

@@ -656,7 +656,7 @@ static void plane_atomic_disable(struct dc *dc, struct pipe_ctx *pipe_ctx)
 
 static void dcn10_disable_plane(struct dc *dc, struct pipe_ctx *pipe_ctx)
 {
-	if (dc->res_pool->hubps[pipe_ctx->pipe_idx]->power_gated)
+	if (!pipe_ctx->plane_res.hubp || pipe_ctx->plane_res.hubp->power_gated)
 		return;
 
 	plane_atomic_disable(dc, pipe_ctx);