RDMA/bnxt_re: Initialize opcode while sending message

Fix compilation warning:

drivers/infiniband/hw/bnxt_re/qplib_rcfw.c:325:18:
  error: variable 'opcode' is uninitialized when used here [-Werror,-Wuninitialized]
        crsqe->opcode = opcode;
                        ^~~~~~
drivers/infiniband/hw/bnxt_re/qplib_rcfw.c:291:11:
  note: initialize the variable 'opcode' to silence this warning
        u8 opcode;
                 ^
                  = '\0'

Fixes: bcfee4ce ("RDMA/bnxt_re: remove redundant cmdq_bitmap")
Link: https://lore.kernel.org/r/6ad1e44be2b560986da6fdc6b68da606413e9026.1686644105.git.leonro@nvidia.comAcked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/bnxt_re/qplib_rcfw.c

@@ -274,7 +274,7 @@ static void __send_message_no_waiter(struct bnxt_qplib_rcfw *rcfw,
 }
 
 static int __send_message(struct bnxt_qplib_rcfw *rcfw,
-			  struct bnxt_qplib_cmdqmsg *msg)
+			  struct bnxt_qplib_cmdqmsg *msg, u8 opcode)
 {
 	u32 bsize, free_slots, required_slots;
 	struct bnxt_qplib_cmdq_ctx *cmdq;
@@ -285,7 +285,6 @@ static int __send_message(struct bnxt_qplib_rcfw *rcfw,
 	struct pci_dev *pdev;
 	unsigned long flags;
 	u16 cookie;
-	u8 opcode;
 	u8 *preq;
 
 	cmdq = &rcfw->cmdq;
@@ -490,7 +489,7 @@ static int __bnxt_qplib_rcfw_send_message(struct bnxt_qplib_rcfw *rcfw,
 	if (rc)
 		return rc == -ENXIO ? bnxt_qplib_map_rc(opcode) : rc;
 
-	rc = __send_message(rcfw, msg);
+	rc = __send_message(rcfw, msg, opcode);
 	if (rc)
 		return rc;