cryptohome: Fix location of comment in error handling code.

A comment wound up in the wrong place is CL 1141327, this moves it to
the correct location.

Bug: 211405
Change-Id: I2b7ce75d5e94764f4b577171f0804ed135a36644
Reviewed-on: https://chromium-review.googlesource.com/1178114Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Commit-Queue: Greg Kerr <kerrnel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584101}

chromeos/cryptohome/cryptohome_util.cc

@@ -328,9 +328,9 @@ MountError CryptohomeErrorToMountError(CryptohomeErrorCode code) {
       return MOUNT_ERROR_OLD_ENCRYPTION;
     case CRYPTOHOME_ERROR_MOUNT_PREVIOUS_MIGRATION_INCOMPLETE:
       return MOUNT_ERROR_PREVIOUS_MIGRATION_INCOMPLETE;
-    // TODO(crbug.com/797563): Split the error space and/or handle everything.
     case CRYPTOHOME_ERROR_REMOVE_FAILED:
       return MOUNT_ERROR_REMOVE_FAILED;
+    // TODO(crbug.com/797563): Split the error space and/or handle everything.
     case CRYPTOHOME_ERROR_LOCKBOX_SIGNATURE_INVALID:
     case CRYPTOHOME_ERROR_LOCKBOX_CANNOT_SIGN:
     case CRYPTOHOME_ERROR_BOOT_ATTRIBUTE_NOT_FOUND: