Use BUG_ON instead of a if condition followed by BUG.

Generated by: scripts/coccinelle/misc/bugon.cocci

CC: Mike Rapoport <r...@linux.vnet.ibm.com>
Signed-off-by: Julia Lawall <julia.law...@lip6.fr>
Signed-off-by: Fengguang Wu <fengguang...@intel.com>
---

 macvtap.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -796,8 +796,7 @@ static ssize_t macvtap_put_user(struct m

                ret = virtio_net_hdr_from_skb(skb, &vnet_hdr,
                                              macvtap_is_little_endian(q));
-               if (ret)
-                       BUG();
+               BUG_ON(ret);

                if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) !=
                    sizeof(vnet_hdr))

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