tpm: Set the flags of the CMD_INIT command to 0

The flags of the CMD_INIT control channel command were not
initialized properly. Fix this and set to 0.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
(cherry picked from commit 3027058)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

hw/tpm/tpm_emulator.c

@@ -260,7 +260,9 @@ static int tpm_emulator_check_caps(TPMEmulator *tpm_emu)
 static int tpm_emulator_startup_tpm(TPMBackend *tb)
 {
     TPMEmulator *tpm_emu = TPM_EMULATOR(tb);
-    ptm_init init;
+    ptm_init init = {
+        .u.req.init_flags = 0,
+    };
     ptm_res res;
 
     DPRINTF("%s", __func__);