net: caif: remove redundant assignment to variable expectlen

Variable expectlen is being assigned a value that is never read, the
assignment occurs before a return statement. The assignment is
redundant and can be removed.
Signed-off-by: NColin Ian King <colin.i.king@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/caif/cfserl.c

@@ -128,7 +128,6 @@ static int cfserl_receive(struct cflayer *l, struct cfpkt *newpkt)
 				if (pkt != NULL)
 					cfpkt_destroy(pkt);
 				layr->incomplete_frm = NULL;
-				expectlen = 0;
 				spin_unlock(&layr->sync);
 				return -EPROTO;
 			}