PCI/ERR: Avoid negated conditional for clarity

mainline inclusion
from mainline-v5.11-rc1
commit 3d7d8fc7
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I51U4T
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3d7d8fc78f4b504819882278fcfe10784eb985fa

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Reverse the sense of the Root Port/Downstream Port conditional for clarity.
No functional change intended.

Link: https://lore.kernel.org/r/20201121001036.8560-9-sean.v.kelley@intel.com
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # non-native/no RCEC
Signed-off-by: NSean V Kelley <sean.v.kelley@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: NJiefeng Ou <oujiefeng@h-partners.com>
Reviewed-by: NKuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Acked-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: NJay Fang <f.fangjian@huawei.com>
Reviewed-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/pci/pcie/err.c

@@ -159,11 +159,11 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
 	 * Error recovery runs on all subordinates of the bridge.  If the
 	 * bridge detected the error, it is cleared at the end.
 	 */
-	if (!(type == PCI_EXP_TYPE_ROOT_PORT ||
-	      type == PCI_EXP_TYPE_DOWNSTREAM))
-		bridge = pci_upstream_bridge(dev);
-	else
+	if (type == PCI_EXP_TYPE_ROOT_PORT ||
+	    type == PCI_EXP_TYPE_DOWNSTREAM)
 		bridge = dev;
+	else
+		bridge = pci_upstream_bridge(dev);
 
 	bus = bridge->subordinate;
 	pci_dbg(bridge, "broadcast error_detected message\n");