net/mlx5: Simplify mlx5_sriov_is_enabled() by using pci core API

It is desired to get rid of num_vfs stored inside mlx5_core_sriov to
safely support vports more than vfs.
To reduce dependency on mlx5_core_sriov num_vfs, start using
pci_num_vf() from pci core.
Signed-off-by: NParav Pandit <parav@mellanox.com>
Reviewed-by: NBodong Wang <bodong@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h

@@ -111,7 +111,6 @@ void mlx5_sriov_cleanup(struct mlx5_core_dev *dev);
 int mlx5_sriov_attach(struct mlx5_core_dev *dev);
 void mlx5_sriov_detach(struct mlx5_core_dev *dev);
 int mlx5_core_sriov_configure(struct pci_dev *dev, int num_vfs);
-bool mlx5_sriov_is_enabled(struct mlx5_core_dev *dev);
 int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id);
 int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id);
 int mlx5_create_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy,
@@ -176,6 +175,11 @@ int mlx5_firmware_flash(struct mlx5_core_dev *dev, const struct firmware *fw);
 void mlx5e_init(void);
 void mlx5e_cleanup(void);
 
+static inline bool mlx5_sriov_is_enabled(struct mlx5_core_dev *dev)
+{
+	return pci_num_vf(dev->pdev) ? true : false;
+}
+
 static inline int mlx5_lag_is_lacp_owner(struct mlx5_core_dev *dev)
 {
 	/* LACP owner conditions:

drivers/net/ethernet/mellanox/mlx5/core/sriov.c

@@ -36,13 +36,6 @@
 #include "mlx5_core.h"
 #include "eswitch.h"
 
-bool mlx5_sriov_is_enabled(struct mlx5_core_dev *dev)
-{
-	struct mlx5_core_sriov *sriov = &dev->priv.sriov;
-
-	return !!sriov->num_vfs;
-}
-
 static int sriov_restore_guids(struct mlx5_core_dev *dev, int vf)
 {
 	struct mlx5_core_sriov *sriov = &dev->priv.sriov;