qemu: emulatorpin: Always set affinity when pinning emulator thread

Similarly to VM startup always set the legacy affinity. Additionally we
don't need to report an explicit error since virProcessSetAffinity
reports them themselves.

src/qemu/qemu_driver.c

@@ -5276,15 +5276,11 @@ qemuDomainPinEmulator(virDomainPtr dom,
                                  " for emulator threads"));
                 goto endjob;
             }
-        } else {
-            if (virProcessSetAffinity(vm->pid, pcpumap) < 0) {
-                virReportError(VIR_ERR_SYSTEM_ERROR, "%s",
-                               _("failed to set cpu affinity for "
-                                 "emulator thread"));
-                goto endjob;
-            }
         }
 
+        if (virProcessSetAffinity(vm->pid, pcpumap) < 0)
+            goto endjob;
+
         virBitmapFree(def->cputune.emulatorpin);
         def->cputune.emulatorpin = NULL;