diff --git a/net/mac802154/llsec.c b/net/mac802154/llsec.c
index 2fb703d70803c82891d04b34587bbe293cb9c6dd..d742e635ad07b2aa752cdcd5581d93d539e972c0 100644
--- a/net/mac802154/llsec.c
+++ b/net/mac802154/llsec.c
@@ -160,7 +160,7 @@ llsec_key_alloc(const struct ieee802154_llsec_key *template)
 	crypto_free_skcipher(key->tfm0);
 err_tfm:
 	for (i = 0; i < ARRAY_SIZE(key->tfm); i++)
-		if (key->tfm[i])
+		if (!IS_ERR_OR_NULL(key->tfm[i]))
 			crypto_free_aead(key->tfm[i]);
 
 	kzfree(key);