Return proper result code after creating pin/password lock

When adding a new restricted profile, user must enter some lockscreen
security. For PIN/password, return the result code (instead of cancelled)
so that UserSettings can proceed with adding the profile.

Bug: 8909229
Change-Id: I3567d7dfac869e38762f9e2a45d8ec83c51fa657

src/com/android/settings/ChooseLockPassword.java

@@ -395,6 +395,7 @@ public class ChooseLockPassword extends PreferenceActivity {
                             LockPatternUtils.LOCKSCREEN_BIOMETRIC_WEAK_FALLBACK, false);
                     mLockPatternUtils.clearLock(isFallback);
                     mLockPatternUtils.saveLockPassword(pin, mRequestedQuality, isFallback);
+                    getActivity().setResult(RESULT_FINISHED);
                     getActivity().finish();
                 } else {
                     CharSequence tmp = mPasswordEntry.getText();