staging: rtl8723au: Fix mis-placed break

In 7c3a8f2a I made a mistake and moved
a break below a bracket, causing a situation where the for loop would
always exit when it shouldn't.

This patch corrects that mistake.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>