soc/intel/fast_spi/Makefile: Fix exit of 16mib-check recipe

Currently, if everything worked fine, `$fail` will be unset, leading
to the following `if` statement:

    if [ -eq 1 ]

Resulting in the error message:

    /bin/sh: line 9: [: -eq: unary operator expected

Fix this by removing the whole `if`, we can just use `exit`.

Change-Id: I1bc7508d2a45a2bec07ef46b9c5d9d0b740fbc74
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51324
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

0 files changed, 0 insertions, 0 deletions