Fix hf_t5 with run_e2e.py (#1313)
Summary:
Fixes https://github.com/pytorch/benchmark/issues/1310
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1313
Reviewed By: yanboliang
Differential Revision: D41392818
Pulled By: xuzhao9
fbshipit-source-id: de005219c6afa10513187ffcc9456031f07939b6
