powerpc/pci: remove the multi-init for pci_dn->phb
pci_dn->phb is set to phb in update_dn_pci_info(), if succeed. This patch removes the duplication of pci_dn->phb initialization. Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com> Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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