Fix keystore return code

Previous bug fix introduced this bug, which hides the begin return code
in some cases.

Bug: 65370298
Test: runtest --path cts/tests/tests/keystore/src/android/keystore/cts
Change-Id: I3f22688eec2a327f7f033d620e342953e7ab3879
(cherry picked from commit 855e348d71518a11bffa42e1a56d39aea1135ad9)
1 file changed