Set LinearLayout visible and call getBottom

Set LinearLayout visible and call getBottom

In my app, I have a ScrollView with a LinearLayout whose visibility is set
on GONE. I need to make it visible and then have my ScrollView scroll to
the bottom of the LinearLayout. For this I'm using this code:
mLinearLayout.setVisibility(View.VISIBLE);
mScrollView.smoothScrollTo(0, mLinearLayout.getBottom());
This however, does not work. When the ScrollView is asked to scroll the
LinearLayout still returns 0 on getBottom().
So when this is called for the first time, the LinearLayout is visible,
but the scrollview has not scrolled. When it is called for a second time,
it does scroll down to the right position.
How can I fix this?