qcrypto_get_x509_cert_fingerprint() reports gnutls_strerror(ret) when
gnutls_x509_crt_init() fails, but ret is still the initial value -1.
Store the gnutls return code before formatting the error, matching
other gnutls call sites in the tree.
Fixes: 2183ab6251 ("crypto/x509-utils: Check for error from gnutls_x509_crt_init()")
Signed-off-by: yujun <yujun@kylinos.cn>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20260629111026.281185-1-yujun@kylinos.cn>
Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>