KVM: SEV: Fold sev_es_vcpu_reset() into sev_vcpu_create()

Fold the remaining line of sev_es_vcpu_reset() into sev_vcpu_create() as
there's no need for a dedicated RESET hook just to init a mutex, and the
mutex should be initialized as early as possible anyways.

No functional change intended.

Reviewed-by: Nikunj A Dadhania <nikunj@amd.com>
Link: https://lore.kernel.org/r/20250819234833.3080255-8-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

Author: sean-jc

arch/x86/kvm/svm/sev.c

@@ -4577,6 +4577,8 @@ int sev_vcpu_create(struct kvm_vcpu *vcpu)
 	struct vcpu_svm *svm = to_svm(vcpu);
 	struct page *vmsa_page;
 
+	mutex_init(&svm->sev_es.snp_vmsa_mutex);
+
 	if (!sev_es_guest(vcpu->kvm))
 		return 0;
 
@@ -4592,11 +4594,6 @@ int sev_vcpu_create(struct kvm_vcpu *vcpu)
 	return 0;
 }
 
-void sev_es_vcpu_reset(struct vcpu_svm *svm)
-{
-	mutex_init(&svm->sev_es.snp_vmsa_mutex);
-}
-
 void sev_es_prepare_switch_to_guest(struct vcpu_svm *svm, struct sev_es_save_area *hostsa)
 {
 	struct kvm *kvm = svm->vcpu.kvm;

arch/x86/kvm/svm/svm.c

@@ -1244,9 +1244,6 @@ static void __svm_vcpu_reset(struct kvm_vcpu *vcpu)
 
 	svm->nmi_masked = false;
 	svm->awaiting_iret_completion = false;
-
-	if (sev_es_guest(vcpu->kvm))
-		sev_es_vcpu_reset(svm);
 }
 
 static void svm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)

arch/x86/kvm/svm/svm.h

@@ -829,7 +829,6 @@ int pre_sev_run(struct vcpu_svm *svm, int cpu);
 void sev_init_vmcb(struct vcpu_svm *svm, bool init_event);
 void sev_vcpu_after_set_cpuid(struct vcpu_svm *svm);
 int sev_es_string_io(struct vcpu_svm *svm, int size, unsigned int port, int in);
-void sev_es_vcpu_reset(struct vcpu_svm *svm);
 void sev_es_recalc_msr_intercepts(struct kvm_vcpu *vcpu);
 void sev_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector);
 void sev_es_prepare_switch_to_guest(struct vcpu_svm *svm, struct sev_es_save_area *hostsa);