net: sched: cls_bpf: use bitwise & rather than logical && on gen_flags

net: sched: cls_bpf: use bitwise & rather than logical && on gen_flags

Currently gen_flags is being operated on by a logical && operator rather
than a bitwise & operator. This looks incorrect as these should be bit
flag operations. Fix this.

Detected by CoverityScan, CID#1460305 ("Logical vs. bitwise operator")

Fixes: 3f7889c4c79b ("net: sched: cls_bpf: call block callbacks for offload)
Signed-off-by: Colin Ian King <[email protected]>
Acked-by: Daniel Borkmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>