ksmbd: fix uninitialized symbol 'share' in smb2_tree_connect()

Fix uninitialized symbol 'share' in smb2_tree_connect().

Fixes: e9d8c2f9 ("ksmbd: add continuous availability share parameter")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/smb/server/smb2pdu.c

@@ -1926,7 +1926,7 @@ int smb2_tree_connect(struct ksmbd_work *work)
 	struct ksmbd_session *sess = work->sess;
 	char *treename = NULL, *name = NULL;
 	struct ksmbd_tree_conn_status status;
-	struct ksmbd_share_config *share;
+	struct ksmbd_share_config *share = NULL;
 	int rc = -EINVAL;
 
 	WORK_BUFFERS(work, req, rsp);
@@ -1988,7 +1988,7 @@ int smb2_tree_connect(struct ksmbd_work *work)
 	write_unlock(&sess->tree_conns_lock);
 	rsp->StructureSize = cpu_to_le16(16);
 out_err1:
-	if (server_conf.flags & KSMBD_GLOBAL_FLAG_DURABLE_HANDLE &&
+	if (server_conf.flags & KSMBD_GLOBAL_FLAG_DURABLE_HANDLE && share &&
 	    test_share_config_flag(share,
 				   KSMBD_SHARE_FLAG_CONTINUOUS_AVAILABILITY))
 		rsp->Capabilities = SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY;