Copy Ranjani's plugin leak fixes from thesofproject#9055.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

tools/testbench/topology.c

@@ -504,7 +504,9 @@ int tb_parse_topology(struct testbench_prm *tb)
 
 out:
  /* free all data */
- free(ctx->tplg_base);
+
+ // TODO: Check this
+ // free(ctx->tplg_base);
  return ret;
 }
 
@@ -917,6 +919,8 @@ void tb_free_topology(struct testbench_prm *tb)
  struct tplg_comp_info *comp_info;
  struct tplg_route_info *route_info;
  struct tplg_pipeline_info *pipe_info;
+ struct tplg_context *ctx = &tb->tplg;
+ struct sof_ipc4_available_audio_format *available_fmts;
  struct list_item *item, *_item;
 
  list_for_item_safe(item, _item, &tb->pcm_list) {
@@ -927,6 +931,9 @@ void tb_free_topology(struct testbench_prm *tb)
 
  list_for_item_safe(item, _item, &tb->widget_list) {
  comp_info = container_of(item, struct tplg_comp_info, item);
+ available_fmts = &comp_info->available_fmt;
+ free(available_fmts->output_pin_fmts);
+ free(available_fmts->input_pin_fmts);
  free(comp_info->name);
  free(comp_info->stream_name);
  free(comp_info->ipc_payload);
@@ -944,5 +951,7 @@ void tb_free_topology(struct testbench_prm *tb)
  free(pipe_info);
  }
 
+ // TODO: Do here or earlier?
+ free(ctx->tplg_base);
  tplg_debug("freed all pipelines, widgets, routes and pcms\n");
 }