net: strparser: fix strparser sk_user_data check

sk_user_data mismatch between what kcm expects (psock) and what strparser expects (strparser).

Queued rx_work, for example calling strp_check_rcv after socket buffer changes, will never complete.

sk_user_data is unused in strparser, so just remove the check.
Signed-off-by: NDave Watson <davejwatson@fb.com>
Acked-by: NTom Herbert <tom@herbertland.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/strparser/strparser.c

@@ -390,9 +390,6 @@ static void do_strp_rx_work(struct strparser *strp)
 	 */
 	lock_sock(csk);
 
-	if (unlikely(csk->sk_user_data != strp))
-		goto out;
-
 	if (unlikely(strp->rx_stopped))
 		goto out;