[PULL 03/13] crypto/x509-utils: propagate the error

["Daniel P. Berrangé" <berrange@redhat.com>]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Propagate the error when qcrypto_x509_get_pk_algorithm fails, instead of
falling through to return 0 (success) with *errp set.

Fixes: e8317c4c9f68 ("crypto/x509-utils: Add helper functions for DIAG 320 subcode 2")
Reviewed-by: Zhuoying Cai <zycai@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 crypto/x509-utils.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/crypto/x509-utils.c b/crypto/x509-utils.c
index 34cbfca26b..edcc44de80 100644
--- a/crypto/x509-utils.c
+++ b/crypto/x509-utils.c
@@ -319,6 +319,9 @@ int qcrypto_x509_check_ecc_curve_p521(uint8_t *cert, size_t size, Error **errp)
     int curve_id;
 
     algo = qcrypto_x509_get_pk_algorithm(cert, size, errp);
+    if (algo < 0) {
+        return -1;
+    }
     if (algo != GNUTLS_PK_ECDSA) {
         return 0;
     }
-- 
2.55.0