bridge: do not call setup_timer() multiple times
bridge: do not call setup_timer() multiple times

commit 9f00b2e7cf24 ("bridge: only expire the mdb entry when query is
received") added a nasty bug as an active timer can be reinitialized.

setup_timer() must be done once, no matter how many time mod_timer()
is called. br_multicast_new_group() is the right place to do this.

Reported-by: Srivatsa S. Bhat <5b23f8226e886b22344fc642373ea657dd596b63@linux.vnet.ibm.com>
Diagnosed-by: Thomas Gleixner <00e4cf8f46a57000a44449bf9dd8cbbcc209fd2a@linutronix.de>
Signed-off-by: Eric Dumazet <312c7d941f03386814be517ffdb3e0eb6624e275@google.com>
Tested-by: Srivatsa S. Bhat <5b23f8226e886b22344fc642373ea657dd596b63@linux.vnet.ibm.com>
Cc: Cong Wang <b08afa93ec8eabe95bc97d12956ca699fa65834c@redhat.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs