bpf_progs/offload.c - increment error counter on failure am: 83f2e887 am:...

bpf_progs/offload.c - increment error counter on failure am: 83f2e887 am: ec1b83c7 am: 1dfedff2

Original change: https://android-review.googlesource.com/c/platform/system/netd/+/1356425

Change-Id: Ieb9287e394d6cb371c11a06f809831321cb6b0e9