mlx5 Coverity reported issues

** CID 1056375:  Error handling issues  (CHECKED_RETURN)
/drivers/net/ethernet/mellanox/mlx5/core/cq.c: 133 in mlx5_core_create_cq()


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*** CID 1056375:  Error handling issues  (CHECKED_RETURN)
/drivers/net/ethernet/mellanox/mlx5/core/cq.c: 133 in mlx5_core_create_cq()
127     	return 0;
128     
129     err_cmd:
130     	memset(&din, 0, sizeof(din));
131     	memset(&dout, 0, sizeof(dout));
132     	din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_CQ);

quoted

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    CID 1056375:  Error handling issues  (CHECKED_RETURN)
    Calling "mlx5_cmd_exec" without checking return value (as is done elsewhere 44 out of 46 times).

133     	mlx5_cmd_exec(dev, &din, sizeof(din), &dout, sizeof(dout));
134     	return err;
135     }
136     EXPORT_SYMBOL(mlx5_core_create_cq);
137     
138     int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)

** CID 1056376:  Error handling issues  (CHECKED_RETURN)
/drivers/net/ethernet/mellanox/mlx5/core/qp.c: 242 in mlx5_core_create_qp()


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*** CID 1056376:  Error handling issues  (CHECKED_RETURN)
/drivers/net/ethernet/mellanox/mlx5/core/qp.c: 242 in mlx5_core_create_qp()
236     
237     err_cmd:
238     	memset(&din, 0, sizeof(din));
239     	memset(&dout, 0, sizeof(dout));
240     	din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_QP);
241     	din.qpn = cpu_to_be32(qp->qpn);

quoted

quoted

    CID 1056376:  Error handling issues  (CHECKED_RETURN)
    Calling "mlx5_cmd_exec" without checking return value (as is done elsewhere 44 out of 46 times).

242     	mlx5_cmd_exec(dev, &din, sizeof(din), &out, sizeof(dout));
243     
244     	return err;
245     }
246     EXPORT_SYMBOL_GPL(mlx5_core_create_qp);
247