Set up tpl only when necessary

Change-Id: I019f0962d5c043a3d832b62dd747dce041161826
diff --git a/av1/encoder/encode_strategy.c b/av1/encoder/encode_strategy.c
index 0d7973e..1e99cec 100644
--- a/av1/encoder/encode_strategy.c
+++ b/av1/encoder/encode_strategy.c
@@ -975,7 +975,9 @@
     av1_configure_buffer_updates(cpi, frame_params, KEY_FRAME, 0);
     av1_set_frame_size(cpi, cm->width, cm->height);
     av1_set_speed_features_framesize_independent(cpi, oxcf->speed);
-    av1_tpl_setup_stats(cpi, frame_params, frame_input);
+    if (cpi->oxcf.enable_tpl_model) {
+      av1_tpl_setup_stats(cpi, frame_params, frame_input);
+    }
   }
 
   if (av1_encode(cpi, dest, frame_input, frame_params, frame_results) !=