PCI: designware: Simplify control flow
Return values immediately when possible to simplify the control flow. No functional change intended. Folded in unused variable removal as pointed out by Fabio Estevam <fabio.estevam@nxp.com>, Arnd Bergmann <arnd@arndb.de>, and Thierry Reding <thierry.reding@gmail.com>. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
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