ARM: ux500: add missing of_node_put()

of_find_compatible_node() returns a pointer with refcount incremented
so both in the error path as well as after usage in soc_info_populate()
respectively actually b8500_read_soc_id() an explicit of_node_put is
needed to release backupram.

Signed-off-by: Nicholas Mc Guire <[e-mail]>
Fixes: commit 18a992787896 ("ARM: ux500: move soc_id driver to drivers/soc")
Acked-by: Ulf Hansson <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/soc/ux500/ux500-soc-id.c

···
 	ux500_setup_id();
 
 	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
-	if (!soc_dev_attr)
+	if (!soc_dev_attr) {
+		of_node_put(backupram);
 		return -ENOMEM;
+	}
 
 	soc_info_populate(soc_dev_attr, backupram);
+	of_node_put(backupram);
 
 	soc_dev = soc_device_register(soc_dev_attr);
 	if (IS_ERR(soc_dev)) {