[PATCH v3 5/6] PCI: xgene: Do PCI error check on own line & keep return value

["Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>]

Instead of a if condition with a line split, use the usual error
handling pattern with a separate variable to improve readability.

pci_generic_config_read32() already returns either PCIBIOS_SUCCESSFUL
or PCIBIOS_DEVICE_NOT_FOUND so it is enough to simply return its
return value when ret != PCIBIOS_SUCCESSFUL.

No functional changes intended.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/pci/controller/pci-xgene.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
index 887b4941ff32..8e457fa450a2 100644
--- a/drivers/pci/controller/pci-xgene.c
+++ b/drivers/pci/controller/pci-xgene.c
@@ -163,10 +163,11 @@ static int xgene_pcie_config_read32(struct pci_bus *bus, unsigned int devfn,
 				    int where, int size, u32 *val)
 {
 	struct xgene_pcie *port = pcie_bus_to_port(bus);
+	int ret;
 
-	if (pci_generic_config_read32(bus, devfn, where & ~0x3, 4, val) !=
-	    PCIBIOS_SUCCESSFUL)
-		return PCIBIOS_DEVICE_NOT_FOUND;
+	ret = pci_generic_config_read32(bus, devfn, where & ~0x3, 4, val);
+	if (ret != PCIBIOS_SUCCESSFUL)
+		return ret;
 
 	/*
 	 * The v1 controller has a bug in its Configuration Request Retry
-- 
2.30.2