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 <stern@rowland.harvard.edu>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/901b7478-45b6-d8b3-f5c6-555712485232@omp.ruSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-dbg.c

@@ -931,7 +931,7 @@ static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
 
 static int fill_buffer(struct debug_buffer *buf)
 {
-	int ret = 0;
+	int ret;
 
 	if (!buf->output_buf)
 		buf->output_buf = vmalloc(buf->alloc_size);
@@ -956,7 +956,7 @@ static ssize_t debug_output(struct file *file, char __user *user_buf,
 		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

@@ -680,7 +680,7 @@ static struct debug_buffer *alloc_buffer(struct ohci_hcd *ohci,
 
 static int fill_buffer(struct debug_buffer *buf)
 {
-	int ret = 0;
+	int ret;
 
 	if (!buf->page)
 		buf->page = (char *)get_zeroed_page(GFP_KERNEL);
@@ -705,7 +705,7 @@ static ssize_t debug_output(struct file *file, char __user *user_buf,
 			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) {