Staging: android: ion: duplicated clearing of sg_table

Because sg_table is cleared in sg_alloc_table via memset we don't need to use
kzalloc to allocate sg_table.
Signed-off-by: Gioh Kim <gioh.kim@lge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/ion_carveout_heap.c

@@ -81,7 +81,7 @@ static int ion_carveout_heap_allocate(struct ion_heap *heap,
 	if (align > PAGE_SIZE)
 		return -EINVAL;
 
-	table = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
+	table = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
 	if (!table)
 		return -ENOMEM;
 	ret = sg_alloc_table(table, 1, GFP_KERNEL);

drivers/staging/android/ion/ion_chunk_heap.c

@@ -55,7 +55,7 @@ static int ion_chunk_heap_allocate(struct ion_heap *heap,
 	if (allocated_size > chunk_heap->size - chunk_heap->allocated)
 		return -ENOMEM;
 
-	table = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
+	table = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
 	if (!table)
 		return -ENOMEM;
 	ret = sg_alloc_table(table, num_chunks, GFP_KERNEL);

drivers/staging/android/ion/ion_system_heap.c

@@ -166,7 +166,7 @@ static int ion_system_heap_allocate(struct ion_heap *heap,
 		max_order = info->order;
 		i++;
 	}
-	table = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
+	table = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
 	if (!table)
 		goto err;
 
@@ -356,7 +356,7 @@ static int ion_system_contig_heap_allocate(struct ion_heap *heap,
 	for (i = len >> PAGE_SHIFT; i < (1 << order); i++)
 		__free_page(page + i);
 
-	table = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
+	table = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
 	if (!table) {
 		ret = -ENOMEM;
 		goto out;