Closing a connection, thus calling net_context_put() will not close a
TCP connection properly, and will leak tcp connection memory.
This is because: net_context_put calls net_context_unref which calls
net_tcp_unref which leads to unref tcp connection and thus sets
ctx->tcp to NULL. Back to net_context_put, that one finally calls
net_tcp_put: but that bails out directly since ctx->tcp is NULL.
Fixing it by inverting net_tcp_put() and net_context_unref() calls
within net_context_put().
Fixes#38598
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
8a2e5b1648