powerpc/pseries: Fix possible leaked device node reference

Failure return from dlpar_configure_connector when dlpar adding cpus
results in leaking references to the cpus parent device node. Move the
call to of_node_put() prior to checking the result of
dlpar_configure_connector.

Fixes: 8d5ff320766f ("powerpc/pseries: Make dlpar_configure_connector parent node aware")

Signed-off-by: Nathan Fontenot <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>

arch/powerpc/platforms/pseries/dlpar.c

···
 		return -ENODEV;
 
 	dn = dlpar_configure_connector(cpu_to_be32(drc_index), parent);
+	of_node_put(parent);
 	if (!dn)
 		return -EINVAL;
-
-	of_node_put(parent);
 
 	rc = dlpar_attach_node(dn);
 	if (rc) {