octeontx2-pf: handle otx2_mbox_get_rsp errors in cn10k.c

[ Upstream commit ac9183023b6a9c09467516abd8aab04f9a2f9564 ]

Add error pointer check after calling otx2_mbox_get_rsp().

Fixes: 2ca89a2c3752 ("octeontx2-pf: TC_MATCHALL ingress ratelimiting offload")
Signed-off-by: Dipendra Khadka <kdipendra88@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c
index c1c99d7054f87f5b241453e45e9b9ec9598a1b5e..7417087b6db597b6f577b066cf9856732f587153 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c
+++ b/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;