scsi: bfa: Remove set but not used variable 'fchs'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/bfa/bfa_svc.c: In function 'uf_recv':
drivers/scsi/bfa/bfa_svc.c:5520:17: warning:
 variable 'fchs' set but not used [-Wunused-but-set-variable]
  struct fchs_s *fchs;
                 ^

Link: https://lore.kernel.org/r/20200418071057.96699-1-yuehaibing@huawei.comSigned-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/bfa/bfa_svc.c

@@ -5517,7 +5517,6 @@ uf_recv(struct bfa_s *bfa, struct bfi_uf_frm_rcvd_s *m)
 	struct bfa_uf_s *uf = &ufm->uf_list[uf_tag];
 	struct bfa_uf_buf_s *uf_buf;
 	uint8_t *buf;
-	struct fchs_s *fchs;
 
 	uf_buf = (struct bfa_uf_buf_s *)
 			bfa_mem_get_dmabuf_kva(ufm, uf_tag, uf->pb_len);
@@ -5526,8 +5525,6 @@ uf_recv(struct bfa_s *bfa, struct bfi_uf_frm_rcvd_s *m)
 	m->frm_len = be16_to_cpu(m->frm_len);
 	m->xfr_len = be16_to_cpu(m->xfr_len);
 
-	fchs = (struct fchs_s *)uf_buf;
-
 	list_del(&uf->qe);	/* dequeue from posted queue */
 
 	uf->data_ptr = buf;