net: macb: Fix mdio child node detection

Commit 4d98bb0d7ec2 ("net: macb: Use mdio child node for MDIO bus if it
exists") added code to detect if a 'mdio' child node exists to the macb
driver. Ths added code does, however, not actually check if the child node
exists, but if the parent node exists. This results in errors such as

macb 10090000.ethernet eth0: Could not attach PHY (-19)

if there is no 'mdio' child node. Fix the code to actually check for
the child node.

Fixes: 4d98bb0d7ec2 ("net: macb: Use mdio child node for MDIO bus if it exists")
Cc: Andrew Lunn <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
Reviewed-by: Sean Anderson <[email protected]>
Tested-by: Claudiu Beznea <[email protected]>
Acked-by: Nicolas Ferre <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

0 files changed, 0 insertions, 0 deletions