Revert "socket, bpf: fix possible use after free"

This reverts commit 02f7e410, which was
commit 02f7e410 upstream

Turns out the backport to 4.9 was broken.

Reported-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>