dma: imx-sdma: fix another incorrect __init annotation

In e34b731faa7d1 ("dma: imx-sdma: Remove spurious __init annotation on
sdma_probe()"), Mark found an extraneous __init label and fixed it.

However, he missed another one, because now we get this other warning:

WARNING: drivers/dma/imx-sdma.o(.text+0x3bb4): Section mismatch in reference from the function sdma_probe() to the function .init.text:sdma_get_firmware()
The function sdma_probe() references
the function __init sdma_get_firmware().

Same reasoning as the last time, the function may get called at
runtime, so it can't be __init.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 52ce1d2..88afc48 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1334,7 +1334,7 @@
 	release_firmware(fw);
 }
 
-static int __init sdma_get_firmware(struct sdma_engine *sdma,
+static int sdma_get_firmware(struct sdma_engine *sdma,
 		const char *fw_name)
 {
 	int ret;