Without this, RISC-V isn't running boot time selftests when they're compiled
in.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Oleksii Kurochko <oleksii.kurochko@gmail.com>
CC: Anthony PERARD <anthony.perard@vates.tech>
CC: Michal Orzel <michal.orzel@amd.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Julien Grall <julien@xen.org>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Stefano Stabellini <sstabellini@kernel.org>

https://gitlab.com/xen-project/people/andyhhp/xen/-/pipelines/1660821676

For-4.20.  Boot selftests are new in 4.20, and work in each other
archtiecture.

LGTM:

Reviewed-By: Oleksii Kurochko <oleksii.kurochko@gmail.com>

Thanks.

~ Oleksii

---
 xen/arch/riscv/setup.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/arch/riscv/setup.c b/xen/arch/riscv/setup.c
index 38ca4f3baa1b..f2b6e684ac69 100644
--- a/xen/arch/riscv/setup.c
+++ b/xen/arch/riscv/setup.c
@@ -109,6 +109,8 @@ void __init noreturn start_xen(unsigned long bootcpu_id,
      */
     system_state = SYS_STATE_boot;
 
+    init_constructors();
+
     if ( acpi_disabled )
     {
         printk("Booting using Device Tree\n");