parisc: Use swap() to swap values in setup_bootmem()

Signed-off-by: Yihao Han <hanyihao@vivo.com>
Signed-off-by: Helge Deller <deller@gmx.de>

arch/parisc/mm/init.c

@@ -127,16 +127,12 @@ static void __init setup_bootmem(void)
 		int j;
 
 		for (j = i; j > 0; j--) {
-			physmem_range_t tmp;
-
 			if (pmem_ranges[j-1].start_pfn <
 			    pmem_ranges[j].start_pfn) {
 
 				break;
 			}
-			tmp = pmem_ranges[j-1];
-			pmem_ranges[j-1] = pmem_ranges[j];
-			pmem_ranges[j] = tmp;
+			swap(pmem_ranges[j-1], pmem_ranges[j]);
 		}
 	}