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In memac_wait_until_free and memac_wait_until_done the use of post-decrement on the test in the while loop for a timeout means that timeout will be equal to -1 on exit in that case. Adjust the test for this expected value. This issue was found by Smatch. Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org> Signed-off-by: Peng Fan <peng.fan@nxp.com>