Fix possible NULL pointer dereference in case devm_kzalloc() failed to allocate memory. Fixes: 60a364760002 ("net: dsa: microchip: Add Microchip KSZ8863 SMI based driver support") Reported-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>