osmo-bts-trx: fix: do not call trx_if_close() two times
osmo-bts-trx: fix: do not call trx_if_close() two times

It's called by trx_phy_inst_open() if trx_if_open() fails.

Change-Id: Ic672f865ab513043a58979471a254a59d44daa6d

osmocom/osmo-bts,osmocom/osmo-bts,osmocom/osmo-bts