#334 fix linter error

plugin/dapp/cert/authority/tools/cryptogen/generator/utils/certutils.go

@@ -30,19 +30,15 @@ func CreateCertificateToMem(template, parent *sm2.Certificate, key csp.Key) (cer
 func CreateCertificateToPem(FileName string, template, parent *sm2.Certificate, key csp.Key) error {
 	pk := key.(*csp.SM2PrivateKey).PrivKey
 
-	var err error
 	pub, _ := template.PublicKey.(*sm2.PublicKey)
 	var puk sm2.PublicKey
 
 	puk.Curve = sm2.P256Sm2()
 	puk.X = pub.X
 	puk.Y = pub.Y
-	_, err = sm2.CreateCertificateToPem(FileName, template, parent, &puk, pk)
-	if err != nil {
-		return err
-	}
+	_, err := sm2.CreateCertificateToPem(FileName, template, parent, &puk, pk)
 
-	return nil
+	return err
 }
 
 // ParseX509CertificateToSm2 解析x509格式为sm2格式证书