target/i386/cpu: avoid shadowed local variables

Reuse the pointer variable used for the unversioned model.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 7836aa6..ed72883 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5976,9 +5976,10 @@
     /* Versioned models: */
 
     for (vdef = x86_cpu_def_get_versions(def); vdef->version; vdef++) {
-        X86CPUModel *m = g_new0(X86CPUModel, 1);
         g_autofree char *name =
             x86_cpu_versioned_model_name(def, vdef->version);
+
+        m = g_new0(X86CPUModel, 1);
         m->cpudef = def;
         m->version = vdef->version;
         m->note = vdef->note;