Description: net: phy: mdio-bcm-unimac: fix potential NULL dereference in unimac_mdio_probe()
References:
Notes:
 carnil> CONFIG_MDIO_BCM_UNIMAC not enabled in Debian.
 carnil> Generic UniMAC MDIO bus driver added in 3.18-rc1
 bwh> It is enabled on armhf (selected by NET_DSA_BCM_SF2).
 bwh> But I don't think this is actually a security issue at all.
Bugs:
upstream: released (4.16-rc1) [297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
4.9-upstream-stable: released (4.9.233) [52e4b929c3bd6fac2a8cf4c2609d71486bde072c]
3.16-upstream-stable: N/A "Vulnerable code introduced later"
3.2-upstream-stable: N/A "Vulnerable code introduced later"
sid: released (4.16.5-1)
4.9-stretch-security: ignored "Not actually a security issue"
3.16-jessie-security: N/A "Vulnerable code not present"
3.2-wheezy-security: N/A "Vulnerable code not present"