Ignore DE retrieveKey failure for non-user-0

retrieveKey can fail in load_all_de_keys if a user
is partially removed, i.e. cases where
fscrypt_destroy_user_key() got interrupted. So just
ignore the failure, else could reboot into recovery.

Test: pm create-user foo
      pm remove-user 10
      adb reboot && check device not enter recovery

Signed-off-by: liulvping <liulvping@xiaomi.com>
Change-Id: Iba9d53a0833524d00e65d0427ab03002c5d8d509
1 file changed