IA64: Move DMA variable into the #ifdef CONFIG_ZONE_DMA section

This avoids a warning because max_dma is either not used or never
referred to.

Signed-off-by: Christoph Lameter <clameter@sgi.com>


Index: linux-2.6.18-mm3/arch/ia64/mm/discontig.c
===================================================================
--- linux-2.6.18-mm3.orig/arch/ia64/mm/discontig.c	2006-10-05 22:42:34.000000000 -0500
+++ linux-2.6.18-mm3/arch/ia64/mm/discontig.c	2006-10-06 01:11:53.957155616 -0500
@@ -682,13 +682,11 @@ static __init int count_node_pages(unsig
  */
 void __init paging_init(void)
 {
-	unsigned long max_dma;
 	unsigned long pfn_offset = 0;
 	unsigned long max_pfn = 0;
 	int node;
 	unsigned long max_zone_pfns[MAX_NR_ZONES];
 
-	max_dma = virt_to_phys((void *) MAX_DMA_ADDRESS) >> PAGE_SHIFT;
 
 	arch_sparse_init();
 
@@ -714,7 +712,8 @@ void __init paging_init(void)
 	}
 
 #ifdef CONFIG_ZONE_DMA
-	max_zone_pfns[ZONE_DMA] = max_dma;
+	max_zone_pfns[ZONE_DMA] =
+		virt_to_phys((void *) MAX_DMA_ADDRESS) >> PAGE_SHIFT;
 #endif
 	max_zone_pfns[ZONE_NORMAL] = max_pfn;
 	free_area_init_nodes(max_zone_pfns);