net: macb: change GFP_KERNEL to GFP_ATOMIC

Function gem_add_flow_filter called on line 2958 inside lock on line 2949
but uses GFP_KERNEL

Generated by: scripts/coccinelle/locks/call_kern.cocci

Fixes: ae8223de3df5 ("net: macb: Added support for RX filtering")
CC: Rafal Ozieblo <rafalo@cadence.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/cadence/macb_main.c

@@ -2799,7 +2799,7 @@ static int gem_add_flow_filter(struct net_device *netdev,
 	int ret = -EINVAL;
 	bool added = false;
 
-	newfs = kmalloc(sizeof(*newfs), GFP_KERNEL);
+	newfs = kmalloc(sizeof(*newfs), GFP_ATOMIC);
 	if (newfs == NULL)
 		return -ENOMEM;
 	memcpy(&newfs->fs, fs, sizeof(newfs->fs));