33d7fa8cb3
With the switch to using the primary CUDA context it became possible for peer access between CUDA devices to already have been enabled for that context, either by a previous Cycles session or third-party library, thus causing the call to `cuCtxEnablePeerAccess` to return `CUDA_ERROR_PEER_ACCESS_ALREADY_ENABLED`. This is not a failure state however, so just needs to be handled like a success return value. Pull Request: https://projects.blender.org/blender/blender/pulls/120255
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