fix bug of ps_py_proto cant find path for the folder not created (#41793)

paddle/fluid/distributed/CMakeLists.txt

@@ -4,6 +4,7 @@ if(WITH_PYTHON)
   py_proto_compile(ps_py_proto SRCS the_one_ps.proto)
   add_custom_target(ps_py_proto_init ALL  
     COMMAND ${CMAKE_COMMAND} -E make_directory ${PADDLE_BINARY_DIR}/python/paddle/distributed/fleet/proto)
+  add_dependencies(ps_py_proto ps_py_proto_init)
   if (NOT WIN32)
     add_custom_command(TARGET ps_py_proto POST_BUILD
       COMMAND mv the_one_ps_pb2.py ${PADDLE_BINARY_DIR}/python/paddle/distributed/fleet/proto/)