KVM: EXPORT_SYMBOL should immediately follow its function

WARNING: EXPORT_SYMBOL(foo); should immediately follow its
function/variable
+EXPORT_SYMBOL_GPL(gfn_to_page);

This patch fixes these warnings to reduce noise when checking new
patches in kvm_main.c.
Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

virt/kvm/kvm_main.c

@@ -1473,7 +1473,6 @@ struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn)
 
 	return kvm_pfn_to_page(pfn);
 }
-
 EXPORT_SYMBOL_GPL(gfn_to_page);
 
 void kvm_release_page_clean(struct page *page)