staging: android: ion: Improve memory alloc style

Use variable name instead of structure name to get size
of memory to allocate as proposed by checkpatch.pl

Signed-off-by: Aliaksei Karaliou <akaraliou.dev@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/ion_system_heap.c

@@ -153,7 +153,7 @@ static int ion_system_heap_allocate(struct ion_heap *heap,
 		max_order = compound_order(page);
 		i++;
 	}
-	table = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
+	table = kmalloc(sizeof(*table), GFP_KERNEL);
 	if (!table)
 		goto free_pages;
 
@@ -383,7 +383,7 @@ 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 = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
+	table = kmalloc(sizeof(*table), GFP_KERNEL);
 	if (!table) {
 		ret = -ENOMEM;
 		goto free_pages;
@@ -433,7 +433,7 @@ static struct ion_heap *__ion_system_contig_heap_create(void)
 {
 	struct ion_heap *heap;
 
-	heap = kzalloc(sizeof(struct ion_heap), GFP_KERNEL);
+	heap = kzalloc(sizeof(*heap), GFP_KERNEL);
 	if (!heap)
 		return ERR_PTR(-ENOMEM);
 	heap->ops = &kmalloc_ops;