RDMA/bnxt_re: Remove some dead code

If the probe succeeds, then auxiliary_get_drvdata() can't return a NULL
pointer.

So several NULL checks can be removed to simplify code.

Signed-off-by: Christophe JAILLET <[e-mail]>
Link: https://patch.msgid.link/f02eb63073[e-mail]
Signed-off-by: Leon Romanovsky <[e-mail]>

drivers/infiniband/hw/bnxt_re/main.c

···
 	struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(adev);
 	struct bnxt_re_dev *rdev;
 
-	if (!en_info)
-		return;
-
 	rdev = en_info->rdev;
 	ib_unregister_device(&rdev->ibdev);
 	bnxt_re_dev_uninit(rdev, BNXT_RE_COMPLETE_REMOVE);
···
 	struct bnxt_re_dev *rdev;
 	struct bnxt_qplib_nq *nq;
 	int indx;
-
-	if (!en_info)
-		return;
 
 	rdev = en_info->rdev;
 	rcfw = &rdev->rcfw;
···
 	struct bnxt_re_dev *rdev;
 	struct bnxt_qplib_nq *nq;
 	int indx, rc;
-
-	if (!en_info)
-		return;
 
 	rdev = en_info->rdev;
 	msix_ent = rdev->en_dev->msix_entries;
···
 	struct bnxt_re_dev *rdev;
 
 	mutex_lock(&bnxt_re_mutex);
-	if (!en_info) {
-		mutex_unlock(&bnxt_re_mutex);
-		return;
-	}
 	rdev = en_info->rdev;
 
 	if (rdev)
···
 	struct bnxt_en_dev *en_dev;
 	struct bnxt_re_dev *rdev;
 
-	if (!en_info)
-		return 0;
-
 	rdev = en_info->rdev;
 	en_dev = en_info->en_dev;
 	mutex_lock(&bnxt_re_mutex);
···
 {
 	struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(adev);
 	struct bnxt_re_dev *rdev;
-
-	if (!en_info)
-		return 0;
 
 	mutex_lock(&bnxt_re_mutex);
 	/* L2 driver may invoke this callback during device recovery, resume.