sctp: remove prsctp_enable from asoc

Like reconf_enable, prsctp_enable should also be removed from asoc,
as asoc->peer.prsctp_capable has taken its job.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index d8bcc47..54ceece 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -7325,7 +7325,7 @@ static int sctp_getsockopt_pr_supported(struct sock *sk, int len,
 		goto out;
 	}
 
-	params.assoc_value = asoc ? asoc->prsctp_enable
+	params.assoc_value = asoc ? asoc->peer.prsctp_capable
 				  : sctp_sk(sk)->ep->prsctp_enable;
 
 	if (put_user(len, optlen))