dpaa_eth: remove redundant initialization

	dma_addr_t addr = qm_fd_addr(fd);

	enum qm_fd_format fd_format;

	struct net_device *net_dev;

	u32 fd_status = fd->status;

	u32 fd_status;

	struct dpaa_bp *dpaa_bp;

	struct dpaa_priv *priv;

	unsigned int skb_len;