Ioana Ciornei 878a20aa15 drivers: net: fsl_ls_mdio: prevent a NULL pointer dereference
Prevent a NULL pointer dereference in the probe path by checking the
return valud of dev_read_addr_ptr() against NULL.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
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