r8169: use tp_to_dev instead of open code

[ Upstream commit 4b6c6065fca123d419afef005a696f51e6590470 ]

The open code is defined as a helper function(tp_to_dev) on r8169_main.c,
which the open code is &tp->pci_dev->dev. The helper function was added
in commit 1e1205b7 ("r8169: add helper tp_to_dev"). And then later,
commit f1e911d5 ("r8169: add basic phylib support") added
r8169_phylink_handler function but it didn't use the helper function.
Thus, tp_to_dev() replaces the open code. This patch doesn't change logic.

Signed-off-by: Juhee Kang <claudiajkang@gmail.com>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/20221129161244.5356-1-claudiajkang@gmail.com


Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: 621735f59064 ("r8169: fix rare issue with broken rx after link-down on RTL8125")
Signed-off-by: Sasha Levin <sashal@kernel.org>