net/mlx4_core: need to call close fw if alloc icm is called twice

net/mlx4_core: need to call close fw if alloc icm is called twice

If mlx4_enable_sriov is called by adapter without this
feature MLX4_DEV_CAP_FLAG2_SYS_EQS then during this path the function alloc
icm is called twice without freeing the structures from the first time.

Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Carol L Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit ed3d2276ef72be23c6367358d80004130d8c797d)

Orabug: 21606315

Acked-by: Mukesh Kacker <mukesh.kacker@oracle.com>
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>