[PyPer] copy-free freeze_module (#65118)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/65118
Cloning the module can increase memory use. By freezing the module directly without cloning it first, we can avoid this memory usage increase.
Reviewed By: eellison, movefast1990
Differential Revision: D30955053
fbshipit-source-id: 2feb738eddcf66aa68c92bf695cc05b57bd990f0
