net: macb: put the "mdio" child node reference on success

macb_mii_init() holds the reference returned by of_get_child_by_name()
for macb_mdiobus_register() and drops it only on the error paths, so
every successful probe leaks a node reference. On a CM5, overlay
removal after four bind cycles reports

  OF: ERROR: memory leak, expected refcount 1 instead of 5

Drop the reference after registration, where __mdiobus_register() has
already taken its own for the lifetime of the bus.

Fixes: 8a6631f1cece ("net: macb: avoid redundant lookup for "mdio" child node in MDIO setup")
Signed-off-by: Nicolai Buchwitz <nb@tipi-net.de>
Link: https://patch.msgid.link/20260907210856.1673589-3-nb@tipi-net.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions