libxc: only munmap when something has actually been mapped in change_pte

Coverity-ID: 1055269
signed-off-by: Matthew Daley <mattjd@gmail.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/tools/libxc/xc_offline_page.c b/tools/libxc/xc_offline_page.c
index fbb53f5f0ff707269ae48b671aeab83b28ddef9e..8195efb9528f6e717739dcb42c9a3b64c7d10882 100644 (file)
--- a/tools/libxc/xc_offline_page.c
+++ b/tools/libxc/xc_offline_page.c
@@ -317,10 +317,10 @@ static int change_pte(xc_interface *xch, int domid,
                     goto failed;
                 }
             }
-        }
 
-        munmap(content, PAGE_SIZE);
-        content = NULL;
+            munmap(content, PAGE_SIZE);
+            content = NULL;
+        }
     }
 
     if ( xc_flush_mmu_updates(xch, mmu) )