macsec: fix checksumming after decryption

Fix checksumming after decryption.

Signed-off-by: Andreas Steinmetz <ast@domdv.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 8ec73d6..8f46aa1 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -865,6 +865,7 @@
 
 static void macsec_finalize_skb(struct sk_buff *skb, u8 icv_len, u8 hdr_len)
 {
+	skb->ip_summed = CHECKSUM_NONE;
 	memmove(skb->data + hdr_len, skb->data, 2 * ETH_ALEN);
 	skb_pull(skb, hdr_len);
 	pskb_trim_unique(skb, skb->len - icv_len);