Propagating Error From impeg2d_pre_pic_dec_proc

In case the function impeg2d_pre_pic_dec_proc returns an error,
the decoder should not try to continue decode.

Bug: 63316832
Test: ran POC under ASAN on patched master
Change-Id: Ib6eed075ac879fb944ca3da70b75d4d723ab93e6
(cherry picked from commit c07e83250dcdc3be3eca434c266472be8fddec5f)