drm/amdkfd: Make svm_migrate_put_sys_page static

This function is only used in this source file.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_migrate.c

@@ -281,7 +281,7 @@ svm_migrate_get_sys_page(struct vm_area_struct *vma, unsigned long addr)
 	return page;
 }
 
-void svm_migrate_put_sys_page(unsigned long addr)
+static void svm_migrate_put_sys_page(unsigned long addr)
 {
 	struct page *page;