fix RPC waiting for device (#10255)
fix RPC waiting for device (#10255)

Co-authored-by: pfk-beta <9a7e6c01ea65ff4a6c5f7bcfc5f7cdabc0aa76e8@gmail.com>
dmlc/tvm,dmlc/tvm,dmlc/tvm,dmlc/tvm,dmlc/tvm,dmlc/tvm,dmlc/tvm,dmlc/tvm,dmlc/tvm