RDMA/bnxt_re: make bnxt_re_ib_init static

Fix sparse warning:

drivers/infiniband/hw/bnxt_re/main.c:1313:5:
 warning: symbol 'bnxt_re_ib_init' was not declared. Should it be static?

Link: https://lore.kernel.org/r/20200330110219.24448-1-yuehaibing@huawei.comSigned-off-by: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NSelvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/bnxt_re/main.c

@@ -1310,7 +1310,7 @@ static void bnxt_re_query_hwrm_intf_version(struct bnxt_re_dev *rdev)
 		le16_to_cpu(resp.hwrm_intf_patch);
 }
 
-int bnxt_re_ib_init(struct bnxt_re_dev *rdev)
+static int bnxt_re_ib_init(struct bnxt_re_dev *rdev)
 {
 	int rc = 0;
 	u32 event;