phy: tegra: xusb: Fix return value of tegra_xusb_find_port_node function

stable inclusion
from stable-v5.10.169
commit 045a31b9
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I6IXQP
CVE: CVE-2023-23000

Reference: https://github.com/torvalds/linux/commit/045a31b95509c8f25f5f04ec5e0dec5cd09f2c5f



--------------------------------

commit 045a31b9 upstream.

callers of tegra_xusb_find_port_node() function only do NULL checking for
the return value. return NULL instead of ERR_PTR(-ENOMEM) to keep
consistent.

Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20211213020507.1458-1-linmq006@gmail.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>