phy: tegra: xusb: Add error pointer check in xusb.c

Add error pointer check after tegra_xusb_find_lane().

Fixes: e8f7d2f ("phy: tegra: xusb: Add usb-phy support")
Signed-off-by: Dipendra Khadka <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: Dipendra333

drivers/phy/tegra/xusb.c

@@ -699,6 +699,8 @@ static int tegra_xusb_setup_usb_role_switch(struct tegra_xusb_port *port)
 		return -ENOMEM;
 
 	lane = tegra_xusb_find_lane(port->padctl, "usb2", port->index);
+	if (IS_ERR(lane))
+		return PTR_ERR(lane);
 
 	/*
 	 * Assign phy dev to usb-phy dev. Host/device drivers can use phy