ipoe: do not skip a session when a dump spans several messages

ipoe_nl_cmd_dump_sessions() increments idx before calling fill_info(),
so once fill_info() fails because the skb is full, idx already points
past the session that did not fit. cb->args[0] is set to that value and
the next round resumes one entry too far, dropping the session from the
dump entirely - one lost session per message boundary, roughly one in
every 90 at the current record size.

Step idx back before leaving the loop.

0 files changed, 0 insertions, 0 deletions