ARM: KVM: Remove pointless void pointer cast

No need to cast the void pointer returned by kmalloc() in
arch/arm/kvm/mmu.c::kvm_alloc_stage2_pgd().
Signed-off-by: Firo Yang <firogm@gmail.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

arch/arm/kvm/mmu.c

@@ -691,7 +691,7 @@ int kvm_alloc_stage2_pgd(struct kvm *kvm)
 		 * work.  This is not used by the hardware and we have no
 		 * alignment requirement for this allocation.
 		 */
-		pgd = (pgd_t *)kmalloc(PTRS_PER_S2_PGD * sizeof(pgd_t),
+		pgd = kmalloc(PTRS_PER_S2_PGD * sizeof(pgd_t),
 				GFP_KERNEL | __GFP_ZERO);
 
 		if (!pgd) {