ALSA: asihpi - Remove useless code in hpi_meter_get_peak()

The hpi_meter_get_peak() function contains the expression
"hm.obj_index = hm.obj_index", which does not carry any semantic load.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 719f82d3 ("ALSA: Add support of AudioScience ASI boards")
Signed-off-by: Valentina Goncharenko <goncharenko.vp@ispras.ru>
Link: https://lore.kernel.org/r/20220901102814.131855-1-goncharenko.vp@ispras.ruSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/asihpi/hpifunc.c

@@ -2020,7 +2020,6 @@ u16 hpi_meter_get_peak(u32 h_control, short an_peakdB[HPI_MAX_CHANNELS]
 		HPI_CONTROL_GET_STATE);
 	if (hpi_handle_indexes(h_control, &hm.adapter_index, &hm.obj_index))
 		return HPI_ERROR_INVALID_HANDLE;
-	hm.obj_index = hm.obj_index;
 	hm.u.c.attribute = HPI_METER_PEAK;
 
 	hpi_send_recv(&hm, &hr);