cfi_flash: Fix else after break

cfi_flash: Fix else after break

If in a loop, the if block in a if/else statement ends in a break, the
statements in the else blockcan be extracted, since the break stops the
execution.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>