exec/memory: Fix kernel-doc warning

During build the kernel-doc script complains about the following issue:

  src/docs/../include/exec/memory.h:1741: warning: Function parameter or member 'n' not described in 'memory_region_unmap_iommu_notifier_range'
  src/docs/../include/exec/memory.h:1741: warning: Excess function parameter 'notifier' description in 'memory_region_unmap_iommu_notifier_range'

Settle on "notifier" for consistency with other memory functions.

Fixes: 7caebbf9ea53
       ("memory: introduce memory_region_unmap_iommu_notifier_range()")
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230315072552.47117-1-shentey@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

include/exec/memory.h

@@ -1738,7 +1738,7 @@ void memory_region_notify_iommu_one(IOMMUNotifier *notifier,
  *
  * @notifier: the notifier to be notified
  */
-void memory_region_unmap_iommu_notifier_range(IOMMUNotifier *n);
+void memory_region_unmap_iommu_notifier_range(IOMMUNotifier *notifier);
 
 
 /**

softmmu/memory.c

@@ -1996,17 +1996,17 @@ void memory_region_notify_iommu_one(IOMMUNotifier *notifier,
     }
 }
 
-void memory_region_unmap_iommu_notifier_range(IOMMUNotifier *n)
+void memory_region_unmap_iommu_notifier_range(IOMMUNotifier *notifier)
 {
     IOMMUTLBEvent event;
 
     event.type = IOMMU_NOTIFIER_UNMAP;
     event.entry.target_as = &address_space_memory;
-    event.entry.iova = n->start;
+    event.entry.iova = notifier->start;
     event.entry.perm = IOMMU_NONE;
-    event.entry.addr_mask = n->end - n->start;
+    event.entry.addr_mask = notifier->end - notifier->start;
 
-    memory_region_notify_iommu_one(n, &event);
+    memory_region_notify_iommu_one(notifier, &event);
 }
 
 void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,