StorageManagerService: don't ignore failures to prepare user storage

We must never leave directories unencrypted.

Bug: 164488924
Bug: 224585613
Change-Id: I9a38ab5cca1ae9c9ebff81fca04615fd83ebe4b2
(cherry picked from commit 50946dd15fd14cbf92b5c7e32ac7a0f088b8b302)
Merged-In: I9a38ab5cca1ae9c9ebff81fca04615fd83ebe4b2
(cherry picked from commit 567e7a0476a3251d02705932268cd5f395ef863f)
Merged-In: I9a38ab5cca1ae9c9ebff81fca04615fd83ebe4b2
1 file changed