mtd: mpc5121_nfc: fix memory leak on error path

Add a call to of_node_put in the error handling code following a call to
of_find_compatible_node.

Signed-off-by: Julia Lawall <[e-mail]>
Acked-by: Wolfram Sang <[e-mail]>
Signed-off-by: Artem Bityutskiy <[e-mail]>
Signed-off-by: David Woodhouse <[e-mail]>

drivers/mtd/nand/mpc5121_nfc.c

···
 	uint rcw_width;
 	uint rcwh;
 	uint romloc, ps;
+	int ret = 0;
 
 	rmnode = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-reset");
 	if (!rmnode) {
···
 	rm = of_iomap(rmnode, 0);
 	if (!rm) {
 		dev_err(prv->dev, "Error mapping reset module node!\n");
-		return -EBUSY;
+		ret = -EBUSY;
+		goto out;
 	}
 
 	rcwh = in_be32(&rm->rcwhr);
···
 				rcw_width * 8, rcw_pagesize,
 				rcw_sparesize);
 	iounmap(rm);
+out:
 	of_node_put(rmnode);
-	return 0;
+	return ret;
 }
 
 /* Free driver resources */