pld: gatemate: fix memory leak
When gatemate_set_instr() fails, the array pointed by
bit_file.raw_file.data is not freed.
Issue identified by OpenOCD Jenkins clang build.
Free the array while propagating the error.
Change-Id: I2f7fadee903f9c65cdc9ab9b52ccb5803b48a59d
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Fixes:
682f927f8e4e ("pld: add support for cologne chip gatemate fpgas")
Reviewed-on: https://review.openocd.org/c/openocd/+/7632
Tested-by: jenkins
Reviewed-by: Daniel Anselmi <danselmi@gmx.ch>