x86/kvm: Remove unused virt to phys translation in kvm_guest_cpu_init()

Presumably, this was introduced due to a conflict resolution with
commit ef68017e ("x86/kvm: Handle async page faults directly through
do_page_fault()"), given that the last posted version [1] of the blamed
commit was not based on the aforementioned commit.

[1] https://lore.kernel.org/kvm/20200525144125.143875-9-vkuznets@redhat.com/

Fixes: b1d40575 ("KVM: x86: Switch KVM guest to using interrupts for page ready APF delivery")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Message-Id: <20221021020113.922027-1-rafaelmendsr@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kernel/kvm.c

@@ -349,7 +349,7 @@ static notrace void kvm_guest_apic_eoi_write(u32 reg, u32 val)
 static void kvm_guest_cpu_init(void)
 {
 	if (kvm_para_has_feature(KVM_FEATURE_ASYNC_PF_INT) && kvmapf) {
-		u64 pa = slow_virt_to_phys(this_cpu_ptr(&apf_reason));
+		u64 pa;
 
 		WARN_ON_ONCE(!static_branch_likely(&kvm_async_pf_enabled));