ia64: remove cast for kmalloc return value

remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-ia64@vger.kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

arch/ia64/kernel/mca_drv.c

@@ -349,7 +349,7 @@ init_record_index_pools(void)
 
 	/* - 3 - */
 	slidx_pool.max_idx = (rec_max_size/sect_min_size) * 2 + 1;
-	slidx_pool.buffer = (slidx_list_t *)
+	slidx_pool.buffer =
 		kmalloc(slidx_pool.max_idx * sizeof(slidx_list_t), GFP_KERNEL);
 
 	return slidx_pool.buffer ? 0 : -ENOMEM;