mm/swapfile.c: tmp is always smaller than max

If tmp is bigger or equal to max, we would jump to new_cluster.

Return true directly.
Signed-off-by: NWei Yang <richard.weiyang@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Reviewed-by: N"Huang, Ying" <ying.huang@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Link: http://lkml.kernel.org/r/20200421213824.8099-2-richard.weiyang@gmail.comSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/swapfile.c

@@ -647,7 +647,7 @@ static bool scan_swap_map_try_ssd_cluster(struct swap_info_struct *si,
 	cluster->next = tmp + 1;
 	*offset = tmp;
 	*scan_base = tmp;
-	return tmp < max;
+	return true;
 }
 
 static void __del_from_avail_list(struct swap_info_struct *p)