Fix a bug in set float32 precision

[Nicorgi]

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What are the changes made in this PR?

• Fix a bug in _set_float32_precision, it should return without either GPU or NPU.

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[Nicorgi]

Hi @ebsmothers , I find a bug in set float32 precision, could you help me run the CI and review this PR? Thanks. 😄

[RdoubleA]

Make sense to me, nice catch

[ebsmothers]

Thanks for the fix!