Merge "Default initializing error_code_ to 0." am: 0a1e14501f am: c177ab6403 am: 520a18c380

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/1748914

Change-Id: I2100e2a3a983b3520aad9c3d1cb384473f321f95