ksmbd: fix non-IPv6 build

The newly added procfs code fails to build when CONFIG_IPv6 is disabled:

fs/smb/server/connection.c: In function 'proc_show_clients':
fs/smb/server/connection.c:47:58: error: 'struct ksmbd_conn' has no member named 'inet6_addr'; did you mean 'inet_addr'?
   47 |                         seq_printf(m, "%-20pI6c", &conn->inet6_addr);
      |                                                          ^~~~~~~~~~
      |                                                          inet_addr
make[7]: *** [scripts/Makefile.build:279: fs/smb/server/connection.o] Error 1
fs/smb/server/mgmt/user_session.c: In function 'show_proc_sessions':
fs/smb/server/mgmt/user_session.c:215:65: error: 'struct ksmbd_conn' has no member named 'inet6_addr'; did you mean 'inet_addr'?
  215 |                         seq_printf(m, " %-40pI6c", &chan->conn->inet6_addr);
      |                                                                 ^~~~~~~~~~
      |                                                                 inet_addr

Rearrange the condition to allow adding a simple preprocessor conditional.

Fixes: b38f99c ("ksmbd: add procfs interface for runtime monitoring and statistics")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: arndb

fs/smb/server/connection.c

@@ -41,10 +41,12 @@ static int proc_show_clients(struct seq_file *m, void *v)
 		jiffies_to_timespec64(jiffies - conn->last_active, &t);
 		ktime_get_real_ts64(&now);
 		t = timespec64_sub(now, t);
-		if (conn->inet_addr)
-			seq_printf(m, "%-20pI4", &conn->inet_addr);
-		else
+#if IS_ENABLED(CONFIG_IPV6)
+		if (!conn->inet_addr)
 			seq_printf(m, "%-20pI6c", &conn->inet6_addr);
+		else
+#endif
+			seq_printf(m, "%-20pI4", &conn->inet_addr);
 		seq_printf(m, "   0x%-10x %-10u %-12d %-10d %ptT\n",
 			   conn->dialect,
 			   conn->total_credits,

fs/smb/server/mgmt/user_session.c

@@ -214,10 +214,12 @@ static int show_proc_sessions(struct seq_file *m, void *v)
 			down_read(&chan->conn->session_lock);
 			ksmbd_user_session_get(session);
 
-			if (chan->conn->inet_addr)
-				seq_printf(m, " %-40pI4", &chan->conn->inet_addr);
-			else
+#if IS_ENABLED(CONFIG_IPV6)
+			if (!chan->conn->inet_addr)
 				seq_printf(m, " %-40pI6c", &chan->conn->inet6_addr);
+			else
+#endif
+				seq_printf(m, " %-40pI4", &chan->conn->inet_addr);
 			seq_printf(m, " %-15s %-10llu %-10s\n",
 				   session_user_name(session),
 				   session->id,