[PATCH 3/5] KVM: PPC: Book3S HV: Free allocated memory if module init fails

[Fabiano Rosas]

The module's exit function is not called when the init fails, we need
to do cleanup before returning.

Signed-off-by: Fabiano Rosas <farosas at linux.ibm.com>
---
 arch/powerpc/kvm/book3s_hv.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index fe20074faa61..a7b82eb438f5 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -5963,7 +5963,7 @@ static int kvmppc_book3s_init_hv(void)
 
 	r = kvm_init_subcore_bitmap();
 	if (r)
-		return r;
+		goto err;
 
 	/*
 	 * We need a way of accessing the XICS interrupt controller,
@@ -5978,7 +5978,8 @@ static int kvmppc_book3s_init_hv(void)
 		np = of_find_compatible_node(NULL, NULL, "ibm,opal-intc");
 		if (!np) {
 			pr_err("KVM-HV: Cannot determine method for accessing XICS\n");
-			return -ENODEV;
+			r = -ENODEV;
+			goto err;
 		}
 		/* presence of intc confirmed - node can be dropped again */
 		of_node_put(np);
@@ -5991,12 +5992,12 @@ static int kvmppc_book3s_init_hv(void)
 
 	r = kvmppc_mmu_hv_init();
 	if (r)
-		return r;
+		goto err;
 
 	if (kvmppc_radix_possible()) {
 		r = kvmppc_radix_init();
 		if (r)
-			return r;
+			goto err;
 	}
 
 	r = kvmppc_uvmem_init();
@@ -6009,6 +6010,12 @@ static int kvmppc_book3s_init_hv(void)
 	kvmppc_hv_ops = &kvm_ops_hv;
 
 	return 0;
+
+err:
+	kvmhv_nested_exit();
+	kvmppc_radix_exit();
+
+	return r;
 }
 
 static void kvmppc_book3s_exit_hv(void)
-- 
2.29.2