[PATCH] x86/mem_sharing: silence ubsan warning

[Tamas K Lengyel <tamas@xxxxxxxxxxxxx>]

Running Xen compiled with UBSAN produces a warning for mismatched size. It's
benign but this patch silences the warning.

Signed-off-by: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>
---
 xen/arch/x86/mm/mem_sharing.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/mm/mem_sharing.c b/xen/arch/x86/mm/mem_sharing.c
index c428fd16ce..6920077dbf 100644
--- a/xen/arch/x86/mm/mem_sharing.c
+++ b/xen/arch/x86/mm/mem_sharing.c
@@ -1638,7 +1638,10 @@ static int fork_hap_allocation(struct domain *cd, struct 
domain *d)
     rc = hap_set_allocation(cd, mb << (20 - PAGE_SHIFT), &preempted);
     paging_unlock(cd);
 
-    return preempted ? -ERESTART : rc;
+    if ( preempted )
+        rc = -ERESTART;
+
+    return rc;
 }
 
 static void copy_tsc(struct domain *cd, struct domain *d)
-- 
2.25.1