check torch_dtype in config as well
Author: hwijeen
Pull request: yes

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Fixes #13195. A detailed problem description and reproducer is in the issue!


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@stas00 as we discussed this issue in #13076 .
(As #13076 deals with a number of issues, I opened #13195 to focus on `torch_dtype` with AutoModel issue.)

Comments:
to fix code quality issues please run: `make fixup` and push the changes

As answered in the issue: https://github.com/huggingface/transformers/issues/13195#issuecomment-903009666
not using `config.torch_type` is by design for v4 and will likely to change in v5.

The original problem will be fixed by https://github.com/huggingface/transformers/pull/13209 - please don't hesitate to validate that it indeed solves it. Thank you!

> As answered in the issue: [#13195 (comment)](https://github.com/huggingface/transformers/issues/13195#issuecomment-903009666)
> not using `config.torch_type` is by design for v4 and will likely to change in v5.

I see. So should this PR be closed or left open for later reference? Thank you!

We can close it for now. It will still be here for reference in either form.