hostdev: Remove temporary variable when checking for VF

The virHostdevIsVirtualFunction() was called exactly twice, and in
both cases the return value was saved to a temporary variable before
being checked. This would be okay if it improved readability, but in
this case is pretty pointless.

Get rid of the temporary variable and check the return value
directly; while at it, change the check from '<= 0' to '!= 1' to
align it with the way other similar *IsVirtualFunction() functions
are used thorough the code.

src/util/virhostdev.c

@@ -416,10 +416,8 @@ virHostdevNetConfigReplace(virDomainHostdevDefPtr hostdev,
     int vf = -1;
     int vlanid = -1;
     bool port_profile_associate = true;
-    int isvf;
 
-    isvf = virHostdevIsVirtualFunction(hostdev);
-    if (isvf <= 0) {
+    if (virHostdevIsVirtualFunction(hostdev) != 1) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("Interface type hostdev is currently supported on"
                          " SR-IOV Virtual Functions only"));
@@ -489,7 +487,6 @@ virHostdevNetConfigRestore(virDomainHostdevDefPtr hostdev,
     int ret = -1;
     int vf = -1;
     bool port_profile_associate = false;
-    int isvf;
 
     /* This is only needed for PCI devices that have been defined
      * using <interface type='hostdev'>. For all others, it is a NOP.
@@ -497,8 +494,7 @@ virHostdevNetConfigRestore(virDomainHostdevDefPtr hostdev,
     if (!virHostdevIsPCINetDevice(hostdev))
        return 0;
 
-    isvf = virHostdevIsVirtualFunction(hostdev);
-    if (isvf <= 0) {
+    if (virHostdevIsVirtualFunction(hostdev) != 1) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("Interface type hostdev is currently supported on"
                          " SR-IOV Virtual Functions only"));