phy: tegra: remove redundant self assignment of 'map'

The assignment of map to itself is redundant and can be removed.
Detected with Coccinelle.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>

drivers/phy/tegra/xusb.c

@@ -418,7 +418,7 @@ tegra_xusb_port_find_lane(struct tegra_xusb_port *port,
 {
 	struct tegra_xusb_lane *lane, *match = ERR_PTR(-ENODEV);
 
-	for (map = map; map->type; map++) {
+	for (; map->type; map++) {
 		if (port->index != map->port)
 			continue;