'ret' is known to be 0 here.
No error code is available, so just remove it from the error message.

Fixes: 921fc183 ("spi: tegra210-quad: Add support for Tegra210 QSPI controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/b990c1bb5830196142c3d70e3e3c6c0245a7e75f.1620404705.git.christophe.jaillet@wanadoo.frSigned-off-by: Mark Brown <broonie@kernel.org>