On success, pci_add_capability2() returns a positive value. On
failure, it sets an error and return a negative value.

pci_add_capability() laboriously checks this behavior. No other
caller does. Drop the checks from pci_add_capability().

Cc: mst@redhat.com
Cc: marcel@redhat.com
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
---
 hw/pci/pci.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 98ccc27..53566b8 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -2270,12 +2270,8 @@ int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
     Error *local_err = NULL;
 
     ret = pci_add_capability2(pdev, cap_id, offset, size, &local_err);
-    if (local_err) {
-        assert(ret < 0);
+    if (ret < 0) {
         error_report_err(local_err);
-    } else {
-        /* success implies a positive offset in config space */
-        assert(ret > 0);
     }
     return ret;
 }
-- 
2.9.3