drivers/gmjstcm: fix a dev_err() call in spi tcm device probe

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4W1R1



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fix a bug in spi tcm probe, that call dev_err(chip->dev, ..)
while chip is NULL.

Signed-off-by: Li ZhiGang <lizhigang@kylinos.cn>