Staging: vt6655: Limit return statements.

Limit return statements within context of switch case to improve
readability.

Signed-off-by: Briana Oursler <briana.oursler@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Link: https://lore.kernel.org/r/fe417533b66d29ef6ea19128b38b8c8de7757ae2.1585763457.git.briana.oursler@gmail.com


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