[PATCH] LoongArch: KVM: Free init resources if kvm_init() fails

kvm_loongarch_init() calls kvm_loongarch_env_init() to allocate the
per-CPU kvm_context (vmcs) and kvm_loongarch_ops and to register the
perf callbacks, and then calls kvm_init(). If kvm_init() fails its
result is returned directly, but since module_init() does not run
module_exit() on failure, kvm_loongarch_env_exit() is never called and
those resources are leaked.

Call kvm_loongarch_env_exit() when kvm_init() fails, matching the
teardown-on-failure pattern used by riscv_kvm_init().

Fixes: 2bd6ac687261 ("LoongArch: KVM: Implement kvm module related interface")
Signed-off-by: Chaithanya Lagisetty <[email protected]>
---
 arch/loongarch/kvm/main.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/loongarch/kvm/main.c b/arch/loongarch/kvm/main.c
index 3e1005526f4b..b6ddf5827c03 100644
--- a/arch/loongarch/kvm/main.c
+++ b/arch/loongarch/kvm/main.c
@@ -428,7 +428,11 @@ static int kvm_loongarch_init(void)
 	if (r)
 		return r;
 
-	return kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE);
+	r = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE);
+	if (r)
+		kvm_loongarch_env_exit();
+
+	return r;
 }
 
 static void kvm_loongarch_exit(void)
-- 
2.43.0