net: ethernet: marvell: octeontx2: Fix uninitialized variable warning

Fix for uninitialized variable warning.

Addresses-Coverity: ("Uninitialized scalar variable")
Signed-off-by: NAnuradha Weeraman <anuradha@debian.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/af/mcs_rvu_if.c

@@ -589,7 +589,7 @@ int rvu_mbox_handler_mcs_free_resources(struct rvu *rvu,
 	u16 pcifunc = req->hdr.pcifunc;
 	struct mcs_rsrc_map *map;
 	struct mcs *mcs;
-	int rc;
+	int rc = 0;
 
 	if (req->mcs_id >= rvu->mcs_blk_cnt)
 		return MCS_AF_ERR_INVALID_MCSID;