Fixed an issue Zygote initialization.

An assignment to a flag and a call to a function that uses that flag
were in the wrong order.

Bug: 146614089
Test: Treehugger
Change-Id: If046aa62084892b8dae10497f15cf4c685d226db
Merged-In: If046aa62084892b8dae10497f15cf4c685d226db