ssa.c: Revert commit 8dc90fb56a5194a0618bc6bdb711b65c4aa2a4a2

Better to have missing frees rather than double frees

commit 8dc90fb56a5194a0618bc6bdb711b65c4aa2a4a2
Author: Hal Rosenstock <hal@mellanox.com>
Date:   Tue Jul 15 20:39:29 2014 +0300

    ssa.c: In ssa_close_devices, add a couple of missing frees

    of smdb and prdb

    Pointed-out-by: Ilya Nelkenbaum <ilyan@mellanox.com>

    Signed-off-by: Hal Rosenstock <hal@mellanox.com>

Signed-off-by: Hal Rosenstock <hal@mellanox.com>