xen/mcelog: eliminate redundant setting of interface version

This already gets done in HYPERVISOR_mca().
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

drivers/xen/mcelog.c

@@ -288,7 +288,6 @@ static int mc_queue_handle(uint32_t flags)
 	int ret = 0;
 
 	mc_op.cmd = XEN_MC_fetch;
-	mc_op.interface_version = XEN_MCA_INTERFACE_VERSION;
 	set_xen_guest_handle(mc_op.u.mc_fetch.data, &g_mi);
 	do {
 		mc_op.u.mc_fetch.flags = flags;
@@ -358,7 +357,6 @@ static int bind_virq_for_mce(void)
 
 	/* Fetch physical CPU Numbers */
 	mc_op.cmd = XEN_MC_physcpuinfo;
-	mc_op.interface_version = XEN_MCA_INTERFACE_VERSION;
 	set_xen_guest_handle(mc_op.u.mc_physcpuinfo.info, g_physinfo);
 	ret = HYPERVISOR_mca(&mc_op);
 	if (ret) {