[CIFS] Fix build break when keys support turned off

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/cifsfs.c

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 89142b3..c635b03 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -1045,8 +1045,8 @@
 	return 0;
 
  out_unregister_resolver_key:
-	unregister_key_type(&key_type_dns_resolver);
 #ifdef CONFIG_CIFS_DFS_UPCALL
+	unregister_key_type(&key_type_dns_resolver);
  out_unregister_key_type:
 #endif
 #ifdef CONFIG_CIFS_UPCALL