net/tls: don't re-check msg decrypted status in tls_device_decrypted()

tls_device_decrypted() is only called from decrypt_skb_update(),
when ctx->decrypted == false, there is no need to re-check the bit.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tls/tls_device.c

@@ -672,10 +672,6 @@ int tls_device_decrypted(struct sock *sk, struct sk_buff *skb)
 	int is_encrypted = !is_decrypted;
 	struct sk_buff *skb_iter;
 
-	/* Skip if it is already decrypted */
-	if (ctx->sw.decrypted)
-		return 0;
-
 	/* Check if all the data is decrypted already */
 	skb_walk_frags(skb, skb_iter) {
 		is_decrypted &= skb_iter->decrypted;