CID 451206 & CID 451208: Control flow issues in lib/dns/dst_api.c

Coverity Scan claims two new instances of dead code in lib/dns/dst_api.c after 263d232c.

*** CID 451208:  Control flow issues  (DEADCODE)
/lib/dns/dst_api.c: 2258 in write_public_key()
2252     		return (dst_key_cleanup(tmpname, fp));
2253     	}
2254     
2255     	fputc('\n', fp);
2256     
2257     	if (ret != ISC_R_SUCCESS) {
>>>     CID 451208:  Control flow issues  (DEADCODE)
>>>     Execution cannot reach this statement: "return dst_key_cleanup(tmpn...".
2258     		return (dst_key_cleanup(tmpname, fp));
2259     	}
2260     
2261     	return (dst_key_close(tmpname, fp, filename));
2262     }
2263     

*** CID 451206:  Control flow issues  (DEADCODE)
/lib/dns/dst_api.c: 2133 in write_key_state()
2127     		printstate(key, DST_KEY_KRRSIG, "KRRSIGState", fp);
2128     		printstate(key, DST_KEY_DS, "DSState", fp);
2129     		printstate(key, DST_KEY_GOAL, "GoalState", fp);
2130     	}
2131     
2132     	if (result != ISC_R_SUCCESS) {
>>>     CID 451206:  Control flow issues  (DEADCODE)
>>>     Execution cannot reach this statement: "return dst_key_cleanup(tmpn...".
2133     		return (dst_key_cleanup(tmpname, fp));
2134     	}
2135     
2136     	return (dst_key_close(tmpname, fp, filename));
2137     }
2138