[PATCH] x86/PV: correct post-preemption progress recording in iommu_memory_setup()

[Jan Beulich]

Coverity validly points out that the mfn_add() as used was dead code.

Coverity ID: 1507475
Signed-off-by: Jan Beulich <jbeul...@suse.com>

--- a/xen/arch/x86/pv/dom0_build.c
+++ b/xen/arch/x86/pv/dom0_build.c
@@ -130,7 +130,7 @@ static void __init iommu_memory_setup(st
                             IOMMUF_readable | IOMMUF_writable | IOMMUF_preempt,
                             flush_flags)) > 0 )
     {
-        mfn_add(mfn, rc);
+        mfn = mfn_add(mfn, rc);
         nr -= rc;
         /* See comment below. */
         for ( ; rc--; ++page )