octeontx2-pf: handle otx2_mbox_get_rsp errors in cn10k.c

Add error pointer check after calling otx2_mbox_get_rsp().

Fixes: 2ca89a2 ("octeontx2-pf: TC_MATCHALL ingress ratelimiting offload")
Signed-off-by: Dipendra Khadka <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: Andrew Lunn <[email protected]>

Author: Dipendra333

drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c

@@ -203,6 +203,11 @@ int cn10k_alloc_leaf_profile(struct otx2_nic *pfvf, u16 *leaf)
 
 	rsp = (struct  nix_bandprof_alloc_rsp *)
 	       otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
+	if (IS_ERR(rsp)) {
+		rc = PTR_ERR(rsp);
+		goto out;
+	}
+
 	if (!rsp->prof_count[BAND_PROF_LEAF_LAYER]) {
 		rc = -EIO;
 		goto out;