[PATCH] fix memory leak on kvm_vm_ioctl_create_spapr_tce

[nixiaoming]

miss kfree(stt) when anon_inode_getfd return fail
so add check anon_inode_getfd return val, and kfree stt

Signed-off-by: nixiaoming <nixiaoming at huawei.com>
---
 arch/powerpc/kvm/book3s_64_vio.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index a160c14..a0b4459 100644
--- a/arch/powerpc/kvm/book3s_64_vio.c
+++ b/arch/powerpc/kvm/book3s_64_vio.c
@@ -341,8 +341,11 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 
 	mutex_unlock(&kvm->lock);
 
-	return anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops,
+	ret = anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops,
 				stt, O_RDWR | O_CLOEXEC);
+	if (ret < 0)
+		goto fail;
+	return ret;
 
 fail:
 	if (stt) {
-- 
2.11.0.1