This definitely is no false positive. I'll submit a fix to net soon.
On Wed, Nov 11, 2020 at 10:56 PM kernel test robot <lkp(a)intel.com> wrote:
>
> >> drivers/net/ethernet/microchip/lan743x_main.c:1030:6: warning: variable
'phydev' is used uninitialized whenever 'if' condition is false
[-Wsometimes-uninitialized]