netlabel: Deletion of an unnecessary check before the function call "cipso_v4_doi_putdef"

The cipso_v4_doi_putdef() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netlabel/netlabel_mgmt.c b/net/netlabel/netlabel_mgmt.c
index 8b3b789..f5807f5 100644
--- a/net/netlabel/netlabel_mgmt.c
+++ b/net/netlabel/netlabel_mgmt.c
@@ -242,8 +242,7 @@
 	return 0;
 
 add_failure:
-	if (cipsov4)
-		cipso_v4_doi_putdef(cipsov4);
+	cipso_v4_doi_putdef(cipsov4);
 	if (entry)
 		kfree(entry->domain);
 	kfree(addrmap);