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This makes the code more compact and error handling more robust by ensuring that mutexes are released in all code paths when control leaves critical section. Acked-by: Pali Rohár <pali@kernel.org> Link: https://lore.kernel.org/r/ZsrBkWIpyEqzClUG@google.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>