qemu: Move TPM command line build code into own function

Move the TPM command line build code into its own function.
Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com>

src/qemu/qemu_command.c

@@ -8192,6 +8192,30 @@ qemuBuildDomainLoaderCommandLine(virCommandPtr cmd,
     return ret;
 }
 
+static int
+qemuBuildTPMCommandLine(virDomainDefPtr def,
+                        virCommandPtr cmd,
+                        virQEMUCapsPtr qemuCaps,
+                        const char *emulator)
+{
+    char *optstr;
+
+    if (!(optstr = qemuBuildTPMBackendStr(def, qemuCaps, emulator)))
+        return -1;
+
+    virCommandAddArgList(cmd, "-tpmdev", optstr, NULL);
+    VIR_FREE(optstr);
+
+    if (!(optstr = qemuBuildTPMDevStr(def, qemuCaps, emulator)))
+        return -1;
+
+    virCommandAddArgList(cmd, "-device", optstr, NULL);
+    VIR_FREE(optstr);
+
+    return 0;
+}
+
+
 qemuBuildCommandLineCallbacks buildCommandLineCallbacks = {
     .qemuGetSCSIDeviceSgName = virSCSIDeviceGetSgName,
 };
@@ -9601,19 +9625,8 @@ qemuBuildCommandLine(virConnectPtr conn,
     }
 
     if (def->tpm) {
-        char *optstr;
-
-        if (!(optstr = qemuBuildTPMBackendStr(def, qemuCaps, emulator)))
+        if (qemuBuildTPMCommandLine(def, cmd, qemuCaps, emulator) < 0)
             goto error;
-
-        virCommandAddArgList(cmd, "-tpmdev", optstr, NULL);
-        VIR_FREE(optstr);
-
-        if (!(optstr = qemuBuildTPMDevStr(def, qemuCaps, emulator)))
-            goto error;
-
-        virCommandAddArgList(cmd, "-device", optstr, NULL);
-        VIR_FREE(optstr);
     }
 
     for (i = 0; i < def->ninputs; i++) {