drivers/pci/controller/dwc/pci-exynos.c:95:1-3: WARNING: PTR_ERR_OR_ZERO can be used

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   36487907f34131c7e3df5b1e6b30b4e3dfcdc0af
commit: 191d6f91f283dfb007499bb8529d54c3ac434bd7 PCI: Remove PCI_MSI_IRQ_DOMAIN architecture whitelist
date:   6 weeks ago

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>


coccinelle warnings: (new ones prefixed by >>)

>> drivers/pci/controller/dwc/pci-exynos.c:95:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Please review and possibly fold the followup patch.

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