linux-phytec-ti

sctp: allow sctp_init_cause to return errors

And do so if the skb doesn't have enough space for the payload.
This is a preparation for the next patch.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>