staging: r8188eu: refactor rtw_usb_bulk_size_boundary()

Using ternary operator to set a variable to true or false is not
needed. Convert two such uses of ternary operator in
rtw_usb_bulk_size_boundary() to just use the condition and return the
value directly instead of using a return variable. This shortens the
code and improves readability. While at it, remove an unneeded line
break from the function head.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220329103756.6740-2-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/include/usb_ops.h

@@ -47,19 +47,14 @@ static inline void rtw_reset_continual_urb_error(struct dvobj_priv *dvobj)
 #define USB_HIGH_SPEED_BULK_SIZE	512
 #define USB_FULL_SPEED_BULK_SIZE	64
 
-static inline u8 rtw_usb_bulk_size_boundary(struct adapter *padapter,
-					    int buf_len)
+static inline u8 rtw_usb_bulk_size_boundary(struct adapter *padapter, int buf_len)
 {
-	u8 rst = true;
 	struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
 
 	if (pdvobjpriv->pusbdev->speed == USB_SPEED_HIGH)
-		rst = (0 == (buf_len) % USB_HIGH_SPEED_BULK_SIZE) ?
-		      true : false;
+		return buf_len % USB_HIGH_SPEED_BULK_SIZE == 0;
 	else
-		rst = (0 == (buf_len) % USB_FULL_SPEED_BULK_SIZE) ?
-		      true : false;
-	return rst;
+		return buf_len % USB_FULL_SPEED_BULK_SIZE == 0;
 }
 
 #endif /* __USB_OPS_H_ */