x86, microcode: Free microcode_info struct at end of hypercall.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/xen/arch/x86/microcode.c b/xen/arch/x86/microcode.c
index 0d97db531d..3b7d6a1356 100644
--- a/xen/arch/x86/microcode.c
+++ b/xen/arch/x86/microcode.c
@@ -147,10 +147,13 @@ static long do_microcode_update(void *_info)
         info->error = error;
 
     info->cpu = next_cpu(info->cpu, cpu_online_map);
-    if ( info->cpu >= NR_CPUS )
-        return info->error;
+    if ( info->cpu < NR_CPUS )
+        return continue_hypercall_on_cpu(info->cpu, do_microcode_update, info);
+
+    error = info->error;
+    xfree(info);
+    return error;
 
-    return continue_hypercall_on_cpu(info->cpu, do_microcode_update, info);
 }
 
 int microcode_update(XEN_GUEST_HANDLE(const_void) buf, unsigned long len)