Handle error for missing client correctly

Author: chrismilson

provider/resource_keycloak_openid_client.go

@@ -540,6 +540,9 @@ func resourceKeycloakOpenidClientCreate(ctx context.Context, data *schema.Resour
 
 	if data.Get("import").(bool) {
 		existingClient, err := keycloakClient.GetOpenidClientByClientId(ctx, client.RealmId, client.ClientId)
+		if err != nil {
+			return diag.FromErr(err)
+		}
 		client.Id = existingClient.Id
 
 		err = keycloakClient.UpdateOpenidClient(ctx, client)