usb: host: {e|o}hci-dbg: kill useless 'ret' variable initializers

The 'ret' local variables are often initialized to 0 but this value is
unused, thus we can kill those initializers...

Acked-by: Alan Stern <[e-mail]>
Signed-off-by: Sergey Shtylyov <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/host/ehci-dbg.c

···
 
 static int fill_buffer(struct debug_buffer *buf)
 {
-	int ret = 0;
+	int ret;
 
 	if (!buf->output_buf)
 		buf->output_buf = vmalloc(buf->alloc_size);
···
 		size_t len, loff_t *offset)
 {
 	struct debug_buffer *buf = file->private_data;
-	int ret = 0;
+	int ret;
 
 	mutex_lock(&buf->mutex);
 	if (buf->count == 0) {

drivers/usb/host/ohci-dbg.c

···
 
 static int fill_buffer(struct debug_buffer *buf)
 {
-	int ret = 0;
+	int ret;
 
 	if (!buf->page)
 		buf->page = (char *)get_zeroed_page(GFP_KERNEL);
···
 			size_t len, loff_t *offset)
 {
 	struct debug_buffer *buf = file->private_data;
-	int ret = 0;
+	int ret;
 
 	mutex_lock(&buf->mutex);
 	if (buf->count == 0) {