xsm: Corrected check in io_has_perm()

Fix the check in io_has_perm() to correctly check the start and end
of I/O Memory.

Signed-off-by : George Coker <gscoker@alpha.ncsc.mil>
Signed-off-by : Paul Nuzzi <pjnuzzi@tycho.ncsc.mil>

xen/xsm/flask/hooks.c

@@ -1176,7 +1176,7 @@ static int io_has_perm(struct domain *d, char *name, unsigned long s,
             return rc;
 
         if ( s != e )
-            rc = iomem_has_perm(d, s, access);
+            rc = iomem_has_perm(d, e, access);
     }
     else if ( strcmp(name, "Interrupts") == 0 )
     {