ASoC: sh: rz-ssi: Drop calling rz_ssi_pio_recv() recursively

ASoC: sh: rz-ssi: Drop calling rz_ssi_pio_recv() recursively

BugLink: https://bugs.launchpad.net/bugs/1969110
[ Upstream commit 6570f991582e32b7992601d0497c61962a2c5dcc ]

Instead of recursively calling rz_ssi_pio_recv() use a while loop
to read the samples from RX fifo.

This also fixes an issue where the return value of rz_ssi_pio_recv()
was ignored when called recursively.

Fixes: 03e786bd4341 ("ASoC: sh: Add RZ/G2L SSIF-2 driver")
Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20220110094711.8574-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit e48b189799d3e39cd94453eabb22b0c49f31107c)
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>