sunrpc: gss: simplify rsi_parse logic

Make an obvious simplification that removes a few lines and some
unnecessary indentation; no change in behavior.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

net/sunrpc/auth_gss/svcauth_gss.c

@@ -224,11 +224,8 @@ static int rsi_parse(struct cache_detail *cd,
 
 	/* major/minor */
 	len = qword_get(&mesg, buf, mlen);
-	if (len < 0)
-		goto out;
-	if (len == 0) {
+	if (len <= 0)
 		goto out;
-	} else {
 	rsii.major_status = simple_strtoul(buf, &ep, 10);
 	if (*ep)
 		goto out;
@@ -255,7 +252,6 @@ static int rsi_parse(struct cache_detail *cd,
 	status = -ENOMEM;
 	if (dup_to_netobj(&rsii.out_token, buf, len))
 		goto out;
-	}
 	rsii.h.expiry_time = expiry;
 	rsip = rsi_update(&rsii, rsip);
 	status = 0;