dma-buf: Combine two function calls into one in dma_buf_debug_show()

A bit of data was put into a sequence by two separate function calls.
Print the same data by a single function call instead.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>

drivers/dma-buf/dma-buf.c

@@ -1122,9 +1122,7 @@ static int dma_buf_debug_show(struct seq_file *s, void *unused)
 		attach_count = 0;
 
 		list_for_each_entry(attach_obj, &buf_obj->attachments, node) {
-			seq_puts(s, "\t");
-
-			seq_printf(s, "%s\n", dev_name(attach_obj->dev));
+			seq_printf(s, "\t%s\n", dev_name(attach_obj->dev));
 			attach_count++;
 		}