[U-Boot] [PATCH v3 4/7] net: mvpp2: no deref null

[nhed+uboot at starry.com]

From: Nevo Hed <nhed+github at starry.com>

phy_dev ptr is set from return of phy_connect() and is used before
test to see if NULL.  Obviously since the test already sxists someone
made the determination that this NULL is possible.

Signed-off-by: Nevo Hed <nhed+github at starry.com>
---
 drivers/net/mvpp2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c
index fae7090121..5f908113f2 100644
--- a/drivers/net/mvpp2.c
+++ b/drivers/net/mvpp2.c
@@ -4494,7 +4494,8 @@ static void mvpp2_phy_connect(struct udevice *dev, struct mvpp2_port *port)
 		 * an option because it is required for the phy_fw_down
 		 * procedure.
 		 */
-		if (phy_dev->drv->uid == 0xffffffff) {/* Generic phy */
+		if (phy_dev &&
+		    phy_dev->drv->uid == 0xffffffff) {/* Generic phy */
 			netdev_warn(port->dev,
 				    "Marking phy as invalid, link will not be checked\n");
 			/* set phy_addr to invalid value */
-- 
2.21.0