module_adapter: Fix use after free in module_adapter_new_ext

Fix use after free in module_adapter_new_ext() by removing the dst access
after freeing mod. The dst points to a field inside the previously
allocated mod structure. The structure is freed on error so its fields do
not need to be cleared beforehand.

Signed-off-by: Adrian Warecki <adrian.warecki@intel.com>

Author: softwarecki

src/audio/module_adapter/module_adapter.c

@@ -335,10 +335,6 @@ struct comp_dev *module_adapter_new_ext(const struct comp_driver *drv,
 		schedule_task_free(dev->task);
 #endif
 	module_adapter_mem_free(mod);
-#if CONFIG_IPC_MAJOR_4
-	dst->ext_data = NULL;
-#endif
-
 	return NULL;
 }