llc2: Remove redundant assignment to rc

Variable rc is set to zero but this value is never read as it is
overwritten with a new value later on, hence it is a redundant
assignment and can be removed.

Cleans up the following clang-analyzer warning:

net/llc/llc_station.c:86:2: warning: Value stored to 'rc' is never read
[clang-analyzer-deadcode.DeadStores].

Reported-by: Abaci Robot <[e-mail]>
Signed-off-by: Jiapeng Chong <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/llc/llc_station.c

···
 
 	if (!nskb)
 		goto out;
-	rc = 0;
 	llc_pdu_decode_sa(skb, mac_da);
 	llc_pdu_decode_ssap(skb, &dsap);
 	llc_pdu_header_init(nskb, LLC_PDU_TYPE_U, 0, dsap, LLC_PDU_RSP);
···
 
 	if (!nskb)
 		goto out;
-	rc = 0;
 	llc_pdu_decode_sa(skb, mac_da);
 	llc_pdu_decode_ssap(skb, &dsap);
 	llc_pdu_header_init(nskb, LLC_PDU_TYPE_U, 0, dsap, LLC_PDU_RSP);