Merge "Default initializing error_code_ to 0." into sc-dev am: edfd5f7e2d am: dedbb3c94e am: a6801fee15

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/keymaster/+/15120684

Change-Id: I66f50d94fc9bcc8f377bb0b7bbab75f07689fb2b