chelsio/chtls: correct function return and return type

csk_mem_free() should return true if send buffer is available,
false otherwise.

Fixes: 3b8305f5 ("crypto: chtls - wait for memory sendmsg, sendpage")
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c

@@ -902,9 +902,9 @@ static int chtls_skb_copy_to_page_nocache(struct sock *sk,
 	return 0;
 }
 
-static int csk_mem_free(struct chtls_dev *cdev, struct sock *sk)
+static bool csk_mem_free(struct chtls_dev *cdev, struct sock *sk)
 {
-	return (cdev->max_host_sndbuf - sk->sk_wmem_queued);
+	return (cdev->max_host_sndbuf - sk->sk_wmem_queued > 0);
 }
 
 static int csk_wait_memory(struct chtls_dev *cdev,