ucc: Fix leaky error path

Found by Daniel Marjamäki using cppcheck
Signed-off-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/serial/ucc_uart.c

@@ -1274,6 +1274,7 @@ static int ucc_uart_probe(struct of_device *ofdev,
 	if (!iprop) {
 		iprop = of_get_property(np, "device-id", NULL);
 		if (!iprop) {
+			kfree(qe_port);
 			dev_err(&ofdev->dev, "UCC is unspecified in "
 				"device tree\n");
 			return -EINVAL;