vxlan: vnifilter: Use GFP_KERNEL instead of GFP_ATOMIC

The function is not called from an atomic context so use GFP_KERNEL
instead of GFP_ATOMIC. The allocation of the per-CPU stats is already
performed with GFP_KERNEL.

Tested using test_vxlan_vnifiltering.sh with CONFIG_DEBUG_ATOMIC_SLEEP.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/20230821141923.1889776-1-idosch@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/vxlan/vxlan_vnifilter.c

@@ -696,7 +696,7 @@ static struct vxlan_vni_node *vxlan_vni_alloc(struct vxlan_dev *vxlan,
 {
 	struct vxlan_vni_node *vninode;
 
-	vninode = kzalloc(sizeof(*vninode), GFP_ATOMIC);
+	vninode = kzalloc(sizeof(*vninode), GFP_KERNEL);
 	if (!vninode)
 		return NULL;
 	vninode->stats = netdev_alloc_pcpu_stats(struct vxlan_vni_stats_pcpu);