[native] helper to handle unexpected response

Summary: We log the same error and return the same status multiple times, so I've moved this logic to a separate helper function.

Test Plan: cargo build; this logic will get tested more by the functions that call it

Reviewers: tomek, atul, karol

Reviewed By: tomek

Subscribers: ashoat, adrian, abosh

Differential Revision: https://phab.comm.dev/D4854