staging: vt6656: Use return instead of goto

Replace the "goto" statements with a direct "return ret" as the jump
label only returns the ret variable.

Also, remove the unnecessary variable initialization because the ret
variable is set a few lines later.

Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200425151747.8199-3-oscar.carter@gmx.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>