virtio_net: split XDP_TX kick and XDP_REDIRECT map flushing

virtio_net: split XDP_TX kick and XDP_REDIRECT map flushing

The driver was combining XDP_TX virtqueue_kick and XDP_REDIRECT
map flushing (xdp_do_flush_map).  This is suboptimal, these two
flush operations should be kept separate.

The suboptimal behavior was introduced in commit be9f43dd5f34
("virtio-net: add missing virtqueue kick when flushing packets").

Fixes: be9f43dd5f34 ("virtio-net: add missing virtqueue kick when flushing packets")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>