A return is needed after sdp_disconnect(). It is the logic
expected and it prevents the use of p_ccb after it's freed.
Bug: 144177780
Bug: 117105007
Test: manual test
Change-Id: I7a64382b36adca37a8ff0c7e361d89ecdc8f3b55
(cherry picked from commit 79cd4eb6)
(cherry picked from commit d76a2d2b)
