crypto: shash - Fix has_key setting

commit 00420a65 upstream.

The has_key logic is wrong for shash algorithms as they always
have a setkey function.  So we should instead be testing against
shash_no_setkey.

Fixes: a5596d63 ("crypto: hash - Add crypto_ahash_has_setkey")
Reported-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

crypto/shash.c

@@ -354,11 +354,10 @@ int crypto_init_shash_ops_async(struct crypto_tfm *tfm)
 	crt->final = shash_async_final;
 	crt->finup = shash_async_finup;
 	crt->digest = shash_async_digest;
-
-	if (alg->setkey) {
 	crt->setkey = shash_async_setkey;
-		crt->has_setkey = true;
-	}
+
+	crt->has_setkey = alg->setkey != shash_no_setkey;
+
 	if (alg->export)
 		crt->export = shash_async_export;
 	if (alg->import)