bnxt_en: Remove a redundant NULL check in bnxt_register_dev()

The memory for "edev->ulp_tbl" is allocated inside the
bnxt_rdma_aux_device_init() function. If it fails, the driver
will not create the auxiliary device for RoCE. Hence the NULL
check inside bnxt_register_dev() is unnecessary.

Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-3-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: Kalesh AP

drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c

@@ -64,9 +64,6 @@ int bnxt_register_dev(struct bnxt_en_dev *edev,
 		return -ENOMEM;
 
 	ulp = edev->ulp_tbl;
-	if (!ulp)
-		return -ENOMEM;
-
 	ulp->handle = handle;
 	rcu_assign_pointer(ulp->ulp_ops, ulp_ops);