kvm: irqchip: fix memory leak

We were taking the exit path after checking ue->flags and return value
of setup_routing_entry(), but 'e' was not freed incase of a failure.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c
index 21c14244f4c4..d7ea8e20dae4 100644
--- a/virt/kvm/irqchip.c
+++ b/virt/kvm/irqchip.c
@@ -213,11 +213,15 @@ int kvm_set_irq_routing(struct kvm *kvm,
                         goto out;
 
                 r = -EINVAL;
-                if (ue->flags)
+                if (ue->flags) {
+                        kfree(e);
                         goto out;
+                }
                 r = setup_routing_entry(new, e, ue);
-                if (r)
+                if (r) {
+                        kfree(e);
                         goto out;
+                }
                 ++ue;
         }