net/cnxk: fix illegal access of Rx inject LF

Fix illegal access on error.

Fixes: 47cca25 ("net/cnxk: support Rx inject")
Cc: [email protected]

Signed-off-by: Aarnav JP <[email protected]>

Author: Aarnav JP

drivers/net/cnxk/cn10k_ethdev_sec.c

@@ -1336,6 +1336,8 @@ cn10k_eth_sec_rx_inject_config(void *device, uint16_t port_id, bool enable)
 	roc_idev_nix_rx_inject_set(port_id, enable);
 
 	inl_lf = roc_nix_inl_inb_inj_lf_get(nix);
+	if (!inl_lf)
+		return -ENOTSUP;
 	sa_base = roc_nix_inl_inb_sa_base_get(nix, dev->inb.inl_dev);
 
 	inj_cfg = &dev->inj_cfg;