Fixed helm uninstall not deleting the resource.

* Added `nil` check for returned err.
  * Return in case of `err` when deleting the release

Signed-off-by: Mayank Thakur <thakurmayank88@gmail.com>

pkg/action/uninstall.go

@@ -113,6 +113,10 @@ func (u *Uninstall) Run(name string) (*release.UninstallReleaseResponse, error)
 	}
 
 	deletedResources, kept, errs := u.deleteRelease(rel)
+	if errs != nil {
+		u.cfg.Log("uninstall: Failed to delete release: %s", errs)
+		return nil, errors.Errorf("failed to delete release: %s", name)
+	}
 
 	if kept != "" {
 		kept = "These resources were kept due to the resource policy:\n" + kept