[PATCH] x86/PVH: avoid 32-bit build warning when obtaining VGA console info

[Jan Beulich]

In the commit referenced below I failed to pay attention to this code
also being buildable as 32-bit. Adjust the type of "ret" - there's no
real need for it to be wider than 32 bits.

Fixes: 934ef33ee75c ("x86/PVH: obtain VGA console info in Dom0")
Reported-by: kernel test robot <l...@intel.com>
Signed-off-by: Jan Beulich <jbeul...@suse.com>

--- a/arch/x86/xen/enlighten_pvh.c
+++ b/arch/x86/xen/enlighten_pvh.c
@@ -48,7 +48,7 @@ void __init xen_pvh_init(struct boot_par
                struct xen_platform_op op = {
                        .cmd = XENPF_get_dom0_console,
                };
-               long ret = HYPERVISOR_platform_op(&op);
+               int ret = HYPERVISOR_platform_op(&op);
 
                if (ret > 0)
                        xen_init_vga(&op.u.dom0_console,