virtio/vsock: remove redundant 'skb_pull()' call

Since we now no longer use 'skb->len' to update credit, there is no sense
to update skbuff state, because it is used only once after dequeue to
copy data and then will be released.

Fixes: 71dc9ec ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
Signed-off-by: Arseniy Krasnov <[email protected]>
Reviewed-by: Stefano Garzarella <[email protected]>
Acked-by: Bobby Eshleman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Arseniy Krasnov

net/vmw_vsock/virtio_transport_common.c

@@ -465,7 +465,6 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk,
 					dequeued_len = err;
 				} else {
 					user_buf_len -= bytes_to_copy;
-					skb_pull(skb, bytes_to_copy);
 				}
 
 				spin_lock_bh(&vvs->rx_lock);