ixgbe: ixgbe_atr() should access udp_hdr(skb) only for UDP packets

ixgbe: ixgbe_atr() should access udp_hdr(skb) only for UDP packets

Orabug: 24568240

Commit 9f12df906cd8 ("ixgbe: Store VXLAN port number in network order")
incorrectly checks for hdr.ipv4->protocol != IPPROTO_UDP
in ixgbe_atr(). This check should be for "==" instead.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 520288218cf233f442aa815496a95622c2672c62)
Signed-off-by: Brian Maly <brian.maly@oracle.com>